I edited the post with this:
Edit: I didn't realize that the signature is not shown on every post, so there's nothing to discuss here anymore. I still believe people should be given second chances, specially when the mistakes were made ages ago and currently some of the banned people were better posters than people currently being on highly respected campaigns such as chipmixer.
If someone is trolling the one who got signature ban then its completely okay to be in my opinion because it is not going to hurt them personally and this can be the best punishment for their mistake which was done yesterday or few years back.
Some of the banned people has contributed better content than you do. So no, it's not completely okay to bash them because they did a mistake years ago, specially not someone like you, give me a fucking break.