The amount of bots teleporting around is absolutely unbelievable

[Lilseph]

Why are they not banned?

For RMTs, the general gist of it is that if the Devs decided to ban them instantly, the RMTs can almost instantly figure out how the Devs are detecting their bots and immediately look for other methods to bypass that detection. The Devs detect the new way the RMTs are bypassing the cheat detection and patch it, only for the RMTs to do the same and look for another way to bypass it. It's a perpetual cycle of patch and exploit which the Devs can't do much to fix else it could affect the general playerbase negativity (i.e. chat restrictions, teleport restrictions, and etc.).

Banning the bots en masse delays the RMT from finding out what is causing the bots to be detected, even though they inevitably will figure it out. You'll normally see a huge crowd of bots popping up just after a ban wave (which one actually happened recently), so that's probably why you saw a lot of them earlier.

As for actual players that are botting, tough to say. Have seen some survive till this day, so I'm not sure what's going on with that.