That's not entirely true. Most games are still built for Windows, and all of the tools for playing games on Linux have come a long way, but there are still a lot of combinations of games and drivers that don't work.

Here's the thing... I have limited time for gaming and when I want to play I just want to sit down and play. My days of sodding about with (the equivalent of) autoexec.bat, config.sys, QEMM configurations, drivers and IRQ allocations are way way behind me for one when one of these combos of drivers and scripts doesn't work, or my game isn't supported, and I just want to spend a hour or two gaming to chill out.

Did linux eventually get HDR support or is it still one (of many) sacrifices you make to game on linux?

If by "gaming" you mean "be able to play a selection of games you might or might not be interested in, in varying states of support and performance", then yes - absolutely true.

None of the games I've played recently even are on Steam, so no, your answer is misleading at best.

And no, I've not tried it recently on my main machine but I've tried it often enough that my summary is still: Feel free to try it, but many (or most) of us still have to stick with Windows even if we don't like it.