what do chess.com do when account is closed

They just move that account to closed abuse or for fair play.No titled players are going to use enignies.For them they do same.

Because I have that experience

my experience at cc is not the same ie
a person can close there own account so it will not say for online abuse or engine use but instead player a closed there account on such and such a day
ive also seen 2000+ grade players get banned for cheating

An opportune time to warn people.
Do they close your account?
They don't!
They keep it going with any renewable payment!
Thus you are charged for an account while not being able to log in. Not joking. THis is what happened to me once on chess bleep com after their baseless accusations. If they deserve to be called accusations; I have no idea what games were concerned.
Chess bleep com are utterly unscrupulous. They will do ANY dirty trick to get another dollar from you, including shutting you out and continuing to charge you.

Please explain what this thread actually is about?

I close my account inactive.I was a super famous player.A star

Now When I close,Moved to abuse.This is not fair.I stands for lichess.

according to chess.com 's month in review they closed 32,337 accounts closed for fair play (including 8 titled players). So the premise titled players don't cheat is bullshit.

Also theres that Dewis-kepa .. Kopi Luak guy, that got caught cheating against Levy Rozman, I think he was titled, not sure.

https://www.chess.com/article/view/chess-com-month-in-review-february-2021

That is correct.There moving titled players who closed insctive to abuse