True not everyone know about raiding, but saying anyone could clear them is just wrong. Black Temple and Sunwell had fights that broke up guilds, and not casual, but actual raiding guilds. The strict 40/25 man numbers was a huge problem as well, as fielding those numbers for average guilds was impossible even then. I didn't play during vanilla but i have read up on it. Most people didn't see past Molten Core. And in BC, which is when I played, SSC, TK, BT, and sunwell were not seen by many people.