painting the entire gaming community as a unit is wrong. Levels of hate toward noobs depends on the game/genre.
Let's take too extremes; eve online and DOTA the warcraft 3 mod (its the mod that demigod, heros of newerth and league of legends are based on.)
Eve is very difficult, but it very very friendly to new players, current players not only welcome new people, there are people whose whole game is based around running ingame organisations designed to help new players - after the official tutorials end. Eve university is a 1000+ person organisation, running for 4 years for players by players, holding even lectures and live guides. I know even in my corp in eve that if some one is willing to learn, and is enthusiastic we will help show them the ropes.
DOTA is a wc3 mod, something which is fairly easy to jump into compared to the above, and hard to master. The DOTA community, bans noobs. Let me repeat... if you play a game of DOTA and people realise that you're new to the mod, and you aren't doing x.y.z that all good players would do, then you don't just get kicked from the game, you also get added to a banlist/blacklist. If you join a DOTA lobby, for the first time and start to download the map - you will get kicked and instabanned. For being a noob- and trying to play dota without downloading the map from a website.
Two extremes of gaming, and all games fit around this spectrum.