Why not?
If I don't know what your code is doing, and I can't modify it, I don't want it. Are you rendering a cube? Are you mining crypto on my machine? And why would I need GPU-rendering? Webpages should be text, images and hierarchy.
It's already executing code on your CPU unless you run noscript or similar...
That's true! Now guess what extension I'm using
Are there other features you've turned off?
You bet. Some I tolerate not disabled, but spoofed or containerised per site.