If you visit his profile, you can see that he got a 2-year-long signature ban:
"Banned from displaying signatures until February 02, 2021, 08:16:07 PM".
I think some unbanned users ended up with shorter, 12-month-long signature bans.
No, I thought that he got permanent ban, than get reduced with what you mentioned. But, as he confirmed, he has never gotten perma ban, just 30-days ban, that leads to my another question: "Did he got 30-days ban without removed signature?"
Moreover, I agreed that I only saw users get reduced bans (after successful ban appeal from perma-ban), that mostly are combination of:
- Signature ban (one or two year)
- A temporary ban (30-60 days, e.g.).
So, I guess redsn0w did not explained his case completely.
I still guess he likely got 30-days temporary ban (without posting) + 24-month signature ban.
Sorry, I checked. He got 30-days ban + 24-month signature ban at the beginning.
There's been no policy change. redsn0w wasn't permanently banned due to several factors which made me think that permabanning him would be a net negative for the forum. Nobody is banned strictly because of "the rules"; it's always handled case-by-case, but almost always, plagiarists deserve to be permabanned.
If you think that a ban should be ended, make your case in a new topic from a "good for the forum as a whole" perspective.