Banning is no guarantee, it is staff's discretion. A few banned accounts' comments remain, eg rigamagician
_

To be fair it is pathetic on chess.com's part that there is no way to delete forum topics.
This is one of the largest chess websites in existence and they can't implement an extremely basic feature? You are right to be complaining, chess_windows

Hey Windows; have you thought this through?? You've been here for 4 yrs. Hypotheticaly, sapose you get banned. Its not you personnally, its your IP address. You still won't have a clean homepage to enjoy because you've burn't all your bridges. Capich??

To be fair it is pathetic on chess.com's part that there is no way to delete forum topics.
This is one of the largest chess websites in existence and they can't implement an extremely basic feature? You are right to be complaining, chess_windows
Topics CAN be deleted, but it is not our policy to allow it anymore.
The simple fact is that once someone else posts in a topic it ceases to be "owned" by the OP and it becomes a shared document. What right does the OP have to delete all the comments from everyone who posted in a topic?!

To be fair it is pathetic on chess.com's part that there is no way to delete forum topics.
This is one of the largest chess websites in existence and they can't implement an extremely basic feature? You are right to be complaining, chess_windows
Topics CAN be deleted, but it is not our policy to allow it anymore.
The simple fact is that once someone else posts in a topic it ceases to be "owned" by the OP and it becomes a shared document. What right does the OP have to delete all the comments from everyone who posted in a topic?!
I believe the OP should have the right, since it is the thread that he/she started. If it werent for the OP, no comments would have been there in the first place. Plus, if the OP can block comments from the thread, why cant they be deleted?
This should be easy to understand, since you quoted the answer to your own question.

Shall I highlight the bit where I ask "What right does the OP have to delete all the comments from everyone who posted in a topic?!" ??
I know that when I post some decent content in a topic, I would not be happy to see that destroyed just because the OP decided that the topic was unworthy of existance. Makes me not want to post anything useful.
I made my statement and Im not a very patient man,I want something and the staff is absent.
You've been given an answer over and over. You're either too stubborn or too stupid to accept it.