Yes, and sometimes what happens is exactly what people say it is. As seems to be the case now, with the in-game conditions making it pretty obvious it’s happening. People are openly advertising for these premades here on the forum: https://us.forums.blizzard.com/en/wow/t/the-av-premade-queue-is-back-let’s-go-boys/429902
And here’s a thread over with 300 posts discussing it: Alliance Exploiting. Circumventing the AV Fix - #10 by Bëåmz-sargeras
Blizzard released a fix, and people are now openly circumventing it.
Why are these people not being banned?