This isn't most of what they complained about. They complained about modding being difficult. I somewhat agree, with things like Vortex not working easily with wine (though it can work with some effort, and needs to be running in the same prefix as the game). However, their largest complaint was just installing Steam in different ways placing the Steam folder in different locations. I think that's just a limitation of flatpak/discover/snap. However, you can create a symlink from wherever it is in whatever directory you want.

They key thing is, Linux doesn't work like Windows. A lot of their complaint (rant) was just stuff they need to get used to. It isn't wrong. They're just expecting it to be Windows, and it isn't. You have to be patient and willing to learn. That's it. They did it when they learned Windows. They just forgot about that process.