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.
Aight, then why hyping forcefully deprecating fully working code base that provided more accessibility and robustness (x11)
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.