My concern isn't gaming. If you do read what I wrote above, I actually say explicitly that gaming improvement is one of the more solid improvements on Linux recently.

The real problem isn't PC gamers, who are typically tech savvy (although the issues with anticheat and display hardware compatibility are relevant for a big chunk of many millions of casual gamers). The problem is with people who use their PCs for work using unsupported software in Windows or Mac. Those people have no time for troubleshooting. One key piece of software doesn't work or isn't available? That's a dealbreaker. One area of the setup has a problem that needs tinkering for troubleshooting? That's a dealbreaker. I am using my computer to make money, I don't have time for posturing. Either all the stuff I need works or it doesn't.

Gaming is a problem, but it actually has a lot of people working to support it because at least one major company is betting on that to make money. Software and hardware compatibility doesn't have the same corporate backing and it makes Linux impractical.