

As I’ve commented elsewhere on this post and others have said, this is a change that affects pretty much no one. I didn’t even know MBR (legacy BIOS) partition tables on UEFI boot was possible, honestly.
By no longer putting in the effort to maintain this bit that no one uses, work can be put to something someone uses.
Also, with Linux, specific distros can get encrapified (kind of happened to Ubuntu), but as others have said, there’s usually always another distro to jump to at worst.
And that is still largely true - I’m still running XFCE with xorg on Debian, and I think the only issue I’ve had was Waydroid.
Will there come a day where what you say is true? Yes.
However, right now, a more apt example to convey your point is systemd; that’s true for most distros with a lot of community support. Even then, its hold isn’t absolute - Alpine seems like the most livable non-systemd distro, though I could be wrong.