Most hardware can’t decode it either which is very important. Also it’s currently being sued over patents

City of heroes is a big example

Ah I read as the Brower doesn’t need that data. I’d say it needs width (maybe height) but that’s it

But this info talked about in OP is done via client sending the data to a server not the server getting it all the time

If the site doesn’t know the window width of can’t react to mobile or desktop users automatically or scale elements/ change to best for your display.

You need mouse input for hovering effects as well

Elon stealing a copy of the epstein files accidently would be hilarious