Why am i just now hearing about this.

The line directly below it:

Doxing unless implicating a user here should never lead to a permaban

So what part of this actually led to his ban

I don't know because I wasn't there. But doxing by definition only uses open source information already available online. It's not the doxer's fault that it was on there to begin with.

That doesn't justify shit, if someone has someone else's information they could do a lot of bad shit with it, therefore doxing can be dangerous

long story short
ragebait