I wouldn't exactly say this is only a GTA community problem. Maybe the culture is changing, the internet allows us to get away with things we normally wouldn't say to others, likewise I doubt some of those people would say the things they have said, to the developers faces who have been working their asses of the past four or five years.
Remember the uproar when Left 4 Dead 2 was announced. http://www.thegtaplace.com/forums/topic/23216-left-4-dead-2-boycott/ Sometimes people will freak out over anything, if only just to find something to complain about. Someone said it before there are many things to do between now and September. Relax and let Rockstar release the game, so that it is not the date we want, but the one we deserve.