iv always auto typed whenever iv needed to and i was in world31 house parties and advertising my house with an autotyper (just like whatevery one else does) and i got banned for 13 days for macroing.. i think its stupid because so many people do it and i get banned wtf. oh well.
Apparently you can get banned, especially if you spam something offensive or advertise.
Personally I've been muted for typing with colour effects at about a sentence per 3 seconds, even though I never used an auto typer. So you can get muted for being a fast typer too