There's a reason the word Fantasy is at the end of the name. The only reason it's called Final Fantasy is so the creator's could make one long Fantasy game, and not have to worry about making anything more the game (though in some cases they made a little more). It's called Fantasy so they can do some weird stuff and get away with it.
Actually, it was originally called Final Fantasy because Final Fantasy was going to be Square’s last game before their company died. It just happened to be a smashing hit so they continued the series.
Also, if Squall (or any of the other characters) were really dead, then why would there still be a game over/ you're dead screen? And don't you think it would have been part of the game?
In some cases, like the squallsdead theory, the creators will put some elements in a game that will hint at something (such as the main hero’s death) but will never explicitly say it. This is just a tactic to create controversy and debates about such games. I believe it worked. Maybe they didn't even intend to make it seem so. In which case they are probably all lulzing at us right nao.
Qhimm's dead; this is just a nightmare about forum life - endless iterations of borken board software, trolls, prats, spam, and crap.
SRS LULZ.