aurahunskilledit's accepted that switching to mumble later on is usually necessary since the vast majority of high level teams use it, so for this reason i think it's good to get new puggers used to the program
dam, didn't realise that mumble elitism was a thing
i'm of the opinion that if these faceit hubs are supposed to be quick to queue into, it would be best to require use of ingame voice. past experience with mumble was wonky at best, as good as it may be to experienced users, and it's not hard to edit voice_enable 1 into your config
edit: furthermore if you go into faceit with a full-stack team (ie on higher levels or whatever) while on whatever voip you choose to use, there's no issue