Wouldn't this dude be 15-16 at the time of those posts? That's a lot of time for a young person to change their views. I know I basically did a 180 from conservative to leftist in that time frame.
I'm not trying to say he wasn't right-wing, but using what someone posted when they were in high school as evidence for political motivation 4-5 years later seems flawed to me
To be fair there still is a lot of tinkering involved to get gaming on Linux working properly (unless you're on the steamdeck, but even them you'll have to tinker for anything that's not verified). Switching proton runners, changing launch options, fighting updates. It's definitely more than most people are willing to deal with. For me personally, I've had to stop updating my video drivers because Nvidia 555 causes all Proton games to crash for me.
I enjoy the experience of tinkering and troubleshooting, so I'm okay with all that, but I completely understand why most people wouldn't want to use Linux for gaming.