Did they Advance the Bok cause?

 Mozart
You are really grasping at straws here and if one analyse the situation carefully your arguments are basically flawed in most cases.  Why were they flawed - lets look at the following:-
"Taute cost us the home AB test in 2012 with a badly missed touch and missed tackle on Cruden

JJ's pathetic half time ball cough up and missed tackle on Barrett cost us the home AB test in 2013
Hougaard's goal line fumbling of the ball twice cost us the Irish test in 2014
Lomp's complete swallowing of the Giteau dummy contributed to that Oz loss this year.
Allende's miss of Kuridrani definitely cost us the Oz match this year
Kriel's miss of the Japanese player cost us the embarrassing pool loss."
Lomp's miss of Keino cost the AB semi"

I agree with you about the Taute call - he was pathetic in the relevant test in 2012.  
Your description of the JJ incidents are fraudulent rubbish.   Morne should have made a relieving kick - which would have resulted in the end of the fiorst half of the test mentioned,  He f#cked up badly and Engelbrecht ended up with possessing a ball in a no-win situation.  The culprit in that case was Morne - not Engelbrecht.   In the case of the Barrett try there were not only Engelbrecht who missed the tackle on Barrett - but De Villiers went out of the defensive line and Morne missed a feeble tackle attempt as well.  To blame only Engelbrecht for that bugger-up is simplistic and in fact a weak and unconvincing argument at best.  It did not cost us the test in 2013 - matter of fact if their was one weak player in that game that did cost us the test it was Morne Steyn.
The Bols lost by 14 points in the Irish test and your idea of blaming only Hougaard was simplistic and useless.   The real problem went much deeper than that those two fumbles.   The real reason was the Irish forwards caused the Boks to get bad balls and the role of our forwards in that loss was an equal reason for the loss.
The blaming of De Jager for swallowing of a dummy by Giteau is a real lot of crap.  Tight 5 forwards are routinely outrun by backs and it happens in every rugby test ever played.  To come up with that  crap about De Jager stems from a vindictive mindset on your part - nothing else.  
The test against the Aussies stemmed from a number of poor plays and you spread your standard BS about blaming one player for the loss.   Lets not forget the BS dished up by Pienaar in that game as well,   You blamed about three or four players for that loss thus far - and never got to the real culprits at all.   Let me think.  First it was De Jager because of the Hooper try (which turned out to be hogwash.   Then it was Malherbe because the scrum was collapsed by Van der Merwe, which was not mentioned at all.   Then it was De Allende for missing a tackle, which was actually to be made by Louw.   Now it is again De Jager for being sidestepped by Giteau.   What is common here is that the list of players are all on your common list of players you dislike intensely.   Most oif your arguments to assign blame was totally flawed .
The japanese test was an abortion by experienced players - the real reason for the loss was a constant stream of penalties given away by  Bismarck du Plessis and a constant fumbling of balls in tackles by Schalk Burger.   Go further and look at the malfunctioning of our Tight 5 and you may get somewhere near the truth about who actually lost us the test match.
So get real and stop using simplistic statements like those above.       
  
    





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Nonsense....each statement is right, certainly more right than your pathetic claim that one Matfield penalty that shouldn't have even been called,  lost us the semi.
Take the JJ argument. Jean rushed up to try and pin Barrett down deep behind the advantage line, he overran the play. He deserves some blame. Barrett then ran laterally across Morne, who held his space, the line was intact..and ran slap bang into JJ who wrapped both arms around him and flat missed him. All had some blame but the only player in a position to make a committed tackle was JJ. He failed the team.
You  started this rubbish live with it.

 Mozart
With all due respect you are talking crap in the case of JJ being the sole reason for the Barrett try.  Full stop.
I did not start the rubbish in this case - you did by attacking the players you constantly demonize in any case.  Dave pointed out the poor performance of Matfield and that started off the whole scenario.
If you are serious about what contribution was made by players in this tournament and question the players you did - what did players like Matfield, Alberts, Jannie du Plessis, De Villiers, et al made to the campaign.
All of the above made a disastrous contribution to the lost test against Japan - in that game Burger and Bismarck du Plessis were poor as well.  That was followed by the Samoa test  - where in 20 minutes f\game time De Jager did more than Matfield did in 60 minutes playing time.   Matfield was a disaster in teh semi-final - whether you like it or not.  
If you compare the players you singled out in your thread to how your favoured experienced players did - everybody would find that they did better than the non-performers you supported for selection to the squad. everyone of them did better than the ones you supported:-
*   De Jager was better than Matfield;*   Malherbe was better than Jannie du Plessis*   De Allende was better than Jean De Villiers at 12*   Kriel was better than De Villiers at 13
Your other great players were avverage to poor -
*   Burger was active but in performance just about average with him being used as a battering ram - flyhalf;*   Not even Meyer was brqave enough to give Morne Steyn any gametime*   On the whole Habana and Pietersen was just slightly above average*   Pienaar was Piss poor
Fact is the experienced players were the real let downs during this tournament and it would be a massive relief if we do not ever see them again in Springbok jerseys in future.