I think it’s because the meme itself is the wrong way to try to make that argument. Instead of just saying “the US has 22% of the world’s aggregate prisoner population and that’s a problem”, it’s making that argument by directly comparing it to a MUCH WORSE regime for that exact violation of rights.
The whataboutisms tend to be bristling at the bad comparisons more than a direct refutation of the underlying point being made. I think complaining about the whataboutisms misses the point of those replies, which is valid.
As the other poster said, why not compare with Scandinavian countries that genuinely do have better justice systems rather than comparing with USSR or CCP which have much worse justice systems?
I use
ps -aux | grep $EXECUTABLE