Mozart
Because you are unequalled when it comes to cricket as is the case also in respect of rugby. The question should rather be why not the replacing of Amla or Duy Plessis when it comes to abttimng failure.
So lets see how they stand at present after the second innings:
Elgar - 156
De Villiers - 125
Markram - 84
De Kock - 68
Amla - 62
Du Plessis - 27
Bavuma - 6
So now you want Klaasen in and let him keep. I would keep De Kocj where he is and bring in some batters to strengthen he team. Klaasen is good in the shorter version of the gam - not in tests, There are better batsmen like Erwee and De Bruin who has much better cricket stats than Klaasen
I would rather drop Amla as well. Those crucial missed catches at getting to be a real problem.
Mozart
I look at runs scored and the rate t which runs are scored when it comes to batting. So what is De Kock's average in the three tests thus far and that of Amla and Du Plessis?
De Kock - 37
Amla - 25,5
Du Plessus - 17,7
So you have an issue with De Kock - but not with Amla and Du Plessis. You remain a farce whenever discussing rugby or cricket.