> Most of this is answered under the tag "Intent to Experiment" and the associated link. It's not a mandate that they're forcing on the web today, it's a public experiment intended in part to solicit feedback for a potential spec: https://groups.google.com/a/chromium.org/g/blink-dev/c/6uBwi...

That does pretty much settle the question: if it's still just an experiment, Google should be asking for consent and web developers should not be assuming that this is the future of browsers, and nobody should be acting like this is a foregone conclusion.