Tørstenstock is the most obvious example. He literally gives away his AutoHotkey scripts on his discord channel. But there are many such cases!
This reddit post details the cheating extensively:
https://www.reddit.com/r/classicwow/comments/12xriyb/wotlk_arena_and_cheaters/
It’s one thing if they’re doing something that is hard to notice or if they are intentionally trying to evade detection. But these guys are just openly cheating and laughing in Blizzard’s face because they know the classic team will do literally nothing to them