Stuff like this is bordering on paranoia. "They want it to fail because they want to gain something from it"?. You know a GAF post has zero effect on anything and literally nothing would change if you "converted" these people, right? VitaGAF cares too much about the opinion of others, whether that opinion is a just a dissenting or even an uninformed one.
Also, what Aenea said.
You think so because you don't see the things in their entirety.
-How many thread about happy or angry people that bought something because of gaf have you ever seen? I saw lots of them, gaf has big influence on many gaffers.
-Internet influence is already great, when it comes to "hardcore games" the influence is even greater(think at XB1 180 for example, petitions etc)
-Vita was doomed and with no games already before the release, despite having one of the biggest launch lineup ever including Uncharted, Wipeout and so on, usually people say that a console has no games after a release with no games, not before a release with many games. The PSP was a great success(despite what haters used to said), Nintendo fanboys were afraid that the PSP successor could have been even more successful maybe dethroning Nintendo after decades of undisputed handheld domain, on the other hand PS3 owners were afraid that Sony would have shifted some of the resources previously destined to the PS3 to Vita(and that's why some PS4 owners say that Vita has no games but they desperately want Tearaway, Gravity Rush, Toukiden and so on)
-That's not just a fan thing though. What about Vita reviews? Vita exclusives are usually underrated by most sites(what we call the "Vita Tax"), reviews of Soul Sacrifice were the worst offenders, do you remember them? Some reviewers didn't finish it, other didn't play the multiplayer, others just didn't know what they were talking about. Why all of this? Everyone was incompetent? Obviously the answer is no(well usually i would say but not at this level). Then what happened? Simple, do you remember that SS was seen as a really big exclusive, the Vita savior and the Monster Hunter Killer? It's not hard to imagine that a saved Vita and Monster Hunter not being the only worthy hunting game(with the risk of losing all the MH players that were on the PSP and didn't buy a 3ds) would have hurt many interests, so with western Sony already not caring anymore for Vita was easy for certain people to pressure for negative reviews(if you think that money are used only to promote won products you are a little naive)
There's even more but now i'm annoyed, think of me that i'm paranoid if you want, but if you think that all the hate vita is getting is completely natural and without purpose you are naive.