of course it isn't the point, and i try to rp as much as possible in games like this, but sometimes you just need to talk tactics or get someone to do a quest with you. outright banning it seems counterproductive.
I think tactics can pretty easily be done while rping. They mostly want you not to use modern terms and follow the personality of your character as far as I can tell
I know the feeling as I experienced that hostility in neverwinter nights servers, but Illarion's community is very friendly and welcoming to new players, even our 1 evil player is on break teaching the game to newcomers!