So I've discovered recently that instead the moderators and admins doing their due diligence, they'll just ban your IP. I can't wait for this to blow up in their face.
From the linked discussion it looks like there's a new feature rolling out where mods can activate "automatic ban evasion protection" during a ban. Mods don't get given any additional info about the user but it gets set up automatically on the back end.
It isn't something a subreddit moderator can use to ban OP's specific IP in the subreddit let alone sitewide Reddit. (OP did not say if they are talking about a subreddit specifically, or if they were banned sitewide)
In fact it's just that random person posting a year ago calling it a "IP ban", the Reddit admins never explained how that subreddit setting works. I'm guessing it's using some sort of algorithm to calculate the likelihood of ban evasion e.g repeated post links / new/unused account / maybe the usage of VPN / Tor IP, that sort of thing. Reddit admins do already sitewide auto-ban accounts spamming links that were already reported and banned prior.
They've been temp banning various VPN IPs for a few years now, giving you a network error when you try to access reddit through the browser from a flagged IP. Although it's been fine for the last couple weeks or so, but that might just be luck or the lack of me trying.
Why are you so rude? They agree with you and gave an example of how it could "blow up in their faces" (as you put it) and then you came back with a snippy remark
I got all my accounts banned and my IP banned so I can't go there if I wanted. Which is great! Now I haven't created a pro LGBTQA forum on here so I have time to do other things around the house. If you like your reddit just be more Nazi. They like that.