Seems like he was on neither side - left or right. Just a guy that hated that Charlie Kirk was speaking ill of his love interest (a man/trans).
100.
The more that’s revealed the more it seems he was apolitical, which I’d imagine had a lot to do with the fact he had a Conservative, Mormon upbringing and then went through a different phase in his life which challenged those ideals and questioned his identity, not exactly in complete contrast, but a life that steered away from that.
Gathering from what his friends say about him and those limited messages, dude seems just like your regular ass, aloof, Gen Z white kid whose existence was playing video games.
Absolutely nothing politically radical about him, which is all the more telling of what being terminally online can do to a person (the nonchalantness when revealing himself as the shooter to his friends almost reads like he was disconnected from real-life).