If your last time using Linux was 10 years ago you’re going to be SO PLEASED at how good it is now.

Because under the hood x11 code is such a hacky mess the developers found it easier to start from scratch than add new features like HDR and VRR to x11.

If new features don’t matter to you, there’s still plenty of distros and DE’s and WM’s that ship x11 and will continue for a very long time.