Whether its something that people adopted willingly or not makes no difference to whether it's an issue. Most things can still be (or still have to be) improved. And once again, "adopt" is sus. As is "willingly" (are you "willingly" accepting something that marketing tells you to be true?).

If its so easy they should equally be capable of implementing their own work around, no?

That's something that is done sometimes, yes. Say, Librewolf could restore some tunables that were removed from Firefox. But that still depends on how invasive the change is (and on whether you can actually implement a workaround or not, which means you'd need the code, a build system, etc).