Free Windows 10 support ended for most people this past month, and the trend line of Linux usage has been quite clear leading up to this, as people prepared for the inevitable. An increase in Linux usage is also correlated to a drop in Chinese players, which did happen this month a little bit, but Linux usage is also trending up when filtering for English only. It’s worth noting that for all the official support Macs ever saw in gaming, they never represented anything better than about 5% of the market.
I can’t say having to fiddle around with Proton versions is exactly intuitive, though it has gotten better since last I tried it a year or so ago.
It is still not quite as smooth as it is on Windows, and I have tech-normie friends who want to do nothing more than download and press play.