This seems like a battle the end user can never win. The only idea I have is that everyone would run an identical, specially crafted, 'browser-vm' / container? that presents identical metrics and values for any amount of system query.

Imagine the data start pouring in as every client is starting to present itself as a 68000 HTML5 only browser, with no react rubbish or javascript support. We might end up with a simpler, and faster internet again. Plus a lot of big tech and ad companies scratching their heads.