> the launcher developer deciding for you what's best for you.

I don’t understand how I would be deciding what’s best for users?

The only reason why third party launchers wouldn’t support live wallpapers is if Google didn’t give devs the tools to render them. All they’d need to do is include a WallpaperView the dev can add to their view hierarchy that supports live wallpapers. Boom, the dev can do fancy effects and the user loses nothing.