there were plenty of "bad players" in vanilla, probably more actually because there was no elitist jerks telling you what to do and addon support was much less.
It was just much easier to hide amongst the crowd and get carried in 40 man raids, looking back i believe i was one of those bad players, i knew nothing about the game but i was raiding mc and coming last on dps meters, having no idea why and loving every minute of it.