Look, forget about threat models. It's relatively trivial these days to avoid fingerprinting attacks if you want to (as a private, web browsing individual). I use fingerprinting actively in enterprise apps as a form of silent 3FA. It's a useful backstop. If I have a user who forgot their password but retrieves it via email, I'll usually let them pass if their fingerprint matches one of their priors; otherwise my soft…
I'm afraid your view is how the journey to the *"world where submitting to such fingerprinting actively was mandatory" starts. Something with frogs in very warm water.
That said, fingerprinting is only useful as a third security measure because most people don't understand its mechanics. The mechanics of avoiding being tracked are pretty basic. If our country required browsers or computers to transmit their fingerprint, people would find ways around it and it would stop being useful as a security metric.
Put another way, the moment this becomes a feature of an oppressive regime, it's one of the easiest things to work around. The obscurity is what makes it remain somewhat useful.