You highlight the issue: Linux users like it to be fragmented. So unless Valve forces consolidation, it will stay a mess, and it will continue to repel average users. If that’s what we want, cool. Let’s just stop calling every year the year of Linux, because that will never be the case.
I agree. I am forced to use dockers with Unraid and I really don’t like them. For me, the benefits are very limited compared to the extra hassle. I think they have become so popular on Linux because they sidestep so many issues related to distro fragmentation. This is yet another example of how the “freedom” of Linux prevents long term innovation and general OS improvements. Especially in terms of UX.