I first got into MH with Freedom 2 in 2007. That game throws you to the wolves from the get-go and I was honestly expecting something different from the game. Like, more DMC-ish. So in my frustration I went to Gamefaqs since the games seemed popular there. There were such elitist shitheads I almost dropped the series then and there. I did stick it out despite their lack of help, but once I 'got gud' I decided I'd never be like that. I try to help people out whenever I can and it's nice to see that most of the MH community has stuck with that.
I have a real hard time taking weapon elitism seriously anyways.The people claiming they boot SnS, LBG, Gunlance users (dependent on game) strike me as the type who will wait 10 minutes for the room to fill up with 4 in order to kill a monster that dies in 3 minutes. If you're that confident in your abilities then you shouldn't be afraid to fight anything with anyone.
These kind of elitist idiots are why I start rooms, so I can kick them when they start getting shitty about other people's loadouts or moaning because a player carted once. It's supposed to be fun and co-operative, not a contest to have the highest DPS. There's a tiny subset of players who can't stand being part of a less-than-optimum team, and are often the same ones so focused on their offensive ability that they won't ever heal or help others in a team game, but will then laugh at them if they cart. Personally I don't really see the fun in a hunt being four min/maxed players pummelling a creature and keeping it stun-locked until death. The best hunts I've had have been close-run things, or at least with a mild chance of the monster winning. The thrill is in the chase and turning the tables for me.
If a team is failing hunt after hunt I'll look at why and check the kit of the hunters that are carting the most (sometimes they, but usually others, leave in frustration), but only so I can offer advice. Often it's forgetting about inate armour elemental weaknesses, and rushing to eat and choose offensive options before seeing what they are hunting, and then no longer having the ability to choose food to cover weaknesses if facing creatures that rely on those attacks (like Lagi these days).
I look at it that if I'm the strongest player in a room I'll take responsibility for bringing lifepowder, paintballing the creature, flash bomb fliers to show new hunters how to get them out of the air, and generally try to shepherd the quest to run smoothly rather than dive in to prove how much more damage I can do.
Particularly in MHG though, a team of players with far-from optimum loadouts is still going to wipe the floor with stuff by the time they've faced it once or twice unless they are woefully under equipped.