Earlier quoted context omitted.
The post you replied to is about hardware specs, not the size of the user base.
Which is filled with broken driver experiences, and a pleothora of distributions.
Graphics card driver issues largely stopped being a problem about 4 years ago, with both major graphics card manufacturers committing to open source drivers.
Packaging for multiple distributions is a problem that I would call "solved" for the past ~2 years, see my comment here: https://news.ycombinator.com/item?id=19844241