Yes lol I've heard of Gamergate. But I still don't think "far right" when I hear "gamer." It wouldn't shock me to learn that they correlate to some degree, but whereas the other precursors sound per se characteristic of the far right to me, "gamer" seems like an odd fit.
Like lots of people from a broad range of backgrounds would describe themselves as gamers, and that's generally uncontroversial. Not the same for any other precursor in that list.