Kinda, but then the random values just become a flag for "has x browser extension installed" and the trackers will still use the things you can't change, like t

Kinda, but then the random values just become a flag for "has x browser extension installed" and the trackers will still use the things you can't change, like the OS networking stack, GPU, audio, etc. to track you. It's very hard to get away completely... even with Tor, if you are the only person who uses Tor to visit a certain site you are as trackable as anyone else for that site.