And since you won’t be able to modify web pages, it will also mean the end of customization, either for looks (ie. DarkReader, Stylus), conveniance (ie. Tampermonkey) or accessibility.
The community feedback is… interesting to say the least.
Even if I agree that a locked down web is the most likely outcome, it’s just not a fact until someone working on that proposal outright says it was their intent, or it actually happens.
At which point it will be too late to decry it as such. You’ll already be locked out (or in).
Honestly, it seems we just naturally can’t see at the same eye leve, yeahl. You seem to be looking for dangers “down”, on newspaper reports on stuff already gone; I’m looking for dangers “up”, to the clouds in the sky and what meteorologists have to say about them.