The term may exist in the industry, but I don't believe in it. I love how you call it hipster BS, too - They're computer and video games, FFS. I don't believe that gaming should segregate, especially now, when gaming is more popular than ever, and after a time when the community was often antagonised. Gamers would do well to get over themselves and their extreme levels of self-importance. 'Hipster' is your type creating such labels to separate yourselves from the rest, because the wider society has embraced gaming. Yet I'm the 'hipster', because I see the thought of '(hard)core' and 'casual' for the load of crap it is.
Self-proclaimed '(hard)core' gamers would open their damn minds and play as many games and genres, and actually enjoy them. I come across many such types who would slate Wii Fit or Zumba Fitness, for example, as 'casual shovelware' games, when they've never been to a Pilates, yoga, Dance or Zumba class in their life, let alone tried it at length (I do every week, and they're ace. Sure, we look silly sometimes, but it's a lot of fun and we enjoy it lots). I would even go further and suggest that they every bit as, if not more '(hard)core' (in the industry's sense of the word) as Halo and Dark Souls. But yeah, I get that you can't have opinions on so-called 'gaming' sites. They're opinions. Some might get it, if they do - great. If they don't - Whatever. Opinions are not facts.