The thing is for every tournament player there will be 10s if not 100s of casual gamers you will never see, because they will be playing at home with their mates over a pizza.
True, but nigeltastic's point is still accurate. While I think there's a ton of ways to play X-Wing, epic, missions, HotAC, 150 point, ect...
It's clear that FFG considers the 100/6 format to be the default and official one. Also we have no way of knowing if all those people playing at home are playing 100/6 or epic or what. It's a logical flaw to assume anything about the format they're playing.
As far as the OP goes, it's no different than every other 'I quit' post you see on a MMO board... The whole point is to take a parting shot at the game and community.
I also have to agree that anyone who quits the game because they can't find anyone to play the format they wish to play, quite frankly have themselves to blame... Unless we accept that 100/6 is in fact the way the vast majority of people prefer to play.
I mean if there's this unseen hoard of casual players who don't care for 100/6... Then it shouldn't be that hard to find them at LGS's or Facebook or something. Myself I think they're out there, just people aren't willing to do what it takes to hook up with them.