It is very common for a for a banned accounts posts to vanish.
Even for entire threads they may have started to vanish.
Particularly if the perpetrators posts were the reason for them being banned.
That is true. It happens all the time to accounts that make chess.com and/or its moderators look foolish.
All accounts closed for abuse or FPV have their content hidden (i.e. their accounts are muted).
There are plenty of posts around the site critical of staff, moderators, and/or the site in general. Those are still around because the posting members didn't violate the site's TOS
Or do you simply follow the crowd, losing all critical thinking as soon as you see a popular opinion?
It's funny that you talk about "critical thinking" just as you swallow a completely unhinged conspiracy theory.
You didn't even have read the original post.
I did. It's complete nonsense.