Years ago, as far as I can tell. Are you using an older version of the app maybe? I've not had Discord outright refuse to send pictures for ~2 years now, for a while it would ask to compress them, now it'll just automatically compress them (unless it's so big it can't of course).
Back in April they also increased the limit to 25MB, so even less stuff should need to get compressed anyway.
A basic photo from my phone is over the file size limit. It’s essentially unusable
For a while this was a problem, but now Discord just auto-compresses photos over 8MB. Obviously this isn't ideal if you want to actually share the full-size image, but for most use-cases a compressed photo is fine. Almost every other chat app is also compressing your images, it just isn't telling you it's doing it outright.
The official term is "cooking up the felonese"
Warzone 2.0 is free to play, so making a new account once banned is pretty trivial. Obviously they also have a financial incentive to keep players in and get them to just stop cheating, so they stick around and buy skins. Less likely to do that if they lose all the skins they do have.
With that said, I am pretty concerned about false positives with these types of systems. I am 99% certain back in Warzone 1 I was accidentally flagged as a cheater. This was when they were queuing cheaters only with other cheaters. So for a few months I was constantly facing blatant aimbotting players. Imagine constantly seeing players that don't actually exist because the game decided something on your PC was sus.
I've never had one that required an interview, but my primary private tracker requires you to log into the webpage not on a VPN. They still suggest heavily that any torrenting is done on a VPN though.
If the owners of the site are competent, they're gonna hash your IP for their logs and not store the actual IP. Hashing is a one-way process, they won't be able to reconstruct your IP from it. If they're storing your raw IP, probably stay away. (Honestly, you can't do nearly as much damage with an IP address as people think, but it'd be a hint to way worse security practices elsewhere)