Try being a GM of an MMO guild for 9+ years across two different MMO's..... you DO learn patience........but.......
I do occasionally get irritated at n00bish play. I also have, in the past, offered to help anyone out, anytime, just by PM'ing me, and getting Teamspeak. I do NOT do typing chat.
The really big issue, is the pre-game new player experience. There is none. It's absurd to not have a training level. Like CoD.
"There is the pistol. Pick up the pistol (Use Space to pick up items). Shoot the pistol (Use Mouse 1 to shoot). Reload the pistol. Shoot the DO with the pistol. Run to next room. Pick up grenade. Throw grenade at DO in case you missed with the pistol. Run to next room. Climb the rope ......."
The game is more about proper mech navigation than it is fighting. In said training level, there can be some navigation basics, the importance of hitting R drilled home, etc, and Bitching Betty can do the voices, so no NPC's are needed.
Fixes a lot of problems. I'd sit through it just to see how thorough it is.
But....
To anyone 'training n00bs', if you're not drilling home the importance of hitting R, you're not really helping. Too often I spectate ( I never leave matches until done) people not hitting R. They're at the fringe of any action, no one is coming to help, and no LRM's can be fired because this person isn't hitting a damned key. Not to mention the fact that that fat red box helps newer players target better. But this guy misses more than hits, because he doesn't hit R.
Lastly, and here's the rub, this IS based on FPS play. Most FPS communities I've ever been a part of, from original Quakeworld, through CounterStrike to Unreal++ and on, well, those communities are rough places to put it mildly. If a new p0layer gets into a good clan, well, there's hope, but, by and large, in an FPS playstyle game, they can be brutal. It's like decades of tradition.
So though it's not the new players fault that they don't know 1/10th of they really need to know, I paid my dues long ago with the n00b thing. I don't know how to fix it and keep it fixed. I expect it to get even more terse once real competitive play comes out, not get better.
Also gotta remember, there are quite a few younger, quick to jump types playing. Me, I'm an old guy, the one telling new players to TURN OFF ZOOM WHEN UP CLOSE in chat once I'm dead