We could not have imagined that South Africa would lose the third match by 342 runs, given the way they had performed in the previous two matches and defeated England back to back. However, in the third match, no South African batsman could survive for more than five minutes at the wicket. It is hard to believe that the batting disaster would be so severe without seeing the batting disaster of an attacking team like South Africa. However, I agree with you that if Temba Bavuma had been fit to bat, then perhaps the margin of defeat would not have been reduced and the team would not have been at the top of the list of the biggest defeats in ODIs.
In this match, hard work and strength and weakness were replaced by it. It is a different surprise to see this match because South Africa wanted to play this match well, but England has failed South Africa by playing strongly in this one match in which there was a big target of 414 which was a defeat for South Africa. England was weak in the first 2 matches, but the way it has been played in this match, there is criticism that it could have played strongly in the first two matches and been successful. I think South Africa did not want to work hard in this last match because they had already victory the series by 2 matches, due to which they were not putting their effort into this match, otherwise England batting and bowling could not have been so tough. England has taken out all their anger in this match which everyone was interested in watching.