What is it about this game (and it's success) that gets so much ire from people?
This place, despite being supposedly an enthusiast forum, is super mainstream. I don't use that in a derogatory way - but it's the total opposite of what enthusiast forums usually are.
Enthusiast forums are usually the ones championing underground, indie stuff (not just talking about games, here). Grassroots success stories like this are supposed to be fuelled in part by forums like NeoGAF.
But in large part due to the phobia many on here seem to have for anything that doesn't fit the mould of their standard, AA-AAA single player focused console games. What they grew up with, the games that they never had to seek out - the ones that were advertised to them in magazines, on TV and appeared prominently on store shelves, NeoGAF doesn't feel like the place that has any real part in the success of these types of games.
It feels like the loudest crowd on here is ultra conservative when it comes to games, and PUBG is just another one of those online focused games that the industry is trending towards. To them this stuff is inexplicably popular. Just look at the GOTY threads a few weeks back regarding this game, a reasonable amount of people just couldn't conceive of the idea that a game like this could be considered 'GOTY'.
Some people over here are hostile or at least dismissive of this game for the same reason they're dismissive to many games that aren't AA-AAA single player focused games.