It's not pure mental illness. To many, this site is a pox on our society.
Here's a past explanation foone's position: https://twitter.com/foone/status/1440697266059153439
And in a way you've even proven foone right. You're insinuating that they are mentally ill. I don't know why you feel that it's okay to treat other humans like that, but I hope you get the help you deserve.