JMR: That "old map" excuse is a joke. Nobody plays old maps. You're talking about ONE team, and that's cP, because they all went inactive, came back, and wanted to play the maps they used to enjoy playing. Wobluda was the most played map last time I checked, that maps new. Not every map released gets played because they aren't good enough. But when a good map comes out, it gets played.
The IRC trolling is people sitting in #paintball who don't even play the game anymore, but troll every "DPSurfer" that enters. I agree, that's gotta suck for new people. But it happens to every person who first connects to IRC, and probably does deter some from continuing playing.
Learning curve: The problem here is ego. There aren't enough people anymore who want to learn from better players, they either claim better players cheat or they talk about how the better players arent even good. (yet they can never come close to beating better players). How do people think shockwave got good? I think Olbaid/Bix and many others will remember how much this guy begged for their demos, begged to watch their games, and litterally studied the game. It's just that people need to put effort into improving, rather then effort into pretending to be good.