Remember those things are non-blocking.. for users who do not care, it is just another bar at the top they can ignore and proceed with their life.
Also from a "user privacy" point of view, this is still OK. Right now, disabling webgl is so rare it makes the user stand out a lot, and can be used as a tracking signal. Also, websites do not expect this to be disabled, and can break.
But if a non-trivial fraction of the users (say 10%) start refusing WebGL, then websites have to keep working without it; and the fact that it is disabled can no longer be used as tracking indicator.
Also from a "user privacy" point of view, this is still OK. Right now, disabling webgl is so rare it makes the user stand out a lot, and can be used as a tracking signal. Also, websites do not expect this to be disabled, and can break.
But if a non-trivial fraction of the users (say 10%) start refusing WebGL, then websites have to keep working without it; and the fact that it is disabled can no longer be used as tracking indicator.