100%
I've lost count of how many threads started of well intentioned then in the 6th or 7th post someone (always nearly the same people) go off topic in the most random manner. By then the thread is ruined and there's no point of even looking at it again. It isn't fair on the other users who want a fair debate and not hijackers hijacking with crap that is probably meant for PMs. Basically attention seeking.