Yeah, there isn’t any geographic information required when giving out ip addresses. Companies like MaxMind maintain a large “GeoIP” database that tries to match IP address with location and is pretty good, but isn’t 100%. VPNs also make the situation worse, as it sounds like with 4chan someone could vpn to a country they didn’t like, post CSAM and get that country banned. It also means users can circumvent the banings with VPNs. All of this makes the entire region banning pretty useless. It’s value comes likely comes from users who don’t know how to use VPNs, but do know what 4chan is.
And then there was the issue with people distributing CSAM via sprays on counterstrike servers. Just joining a server would mean downloading those sprays onto your machine without your knowledge, just so they could be visible in game (which is more or less how the web works anyway, but the point here was that someone could create hundreds of sprays with CSAM and then even if not used, every player would have that content somewhere on their computer.
Edit: not sure why I brought up the counterstrike thing. I think I was trying to make the point thats unfortunately sometimes this material seems to be weaponized. All around awful.