That will work until websites start requiring it. At that point browsers like Firefox have to either capitulate and implement Google's DRM or become unusable for the majority of websites.

And then we'll have a web where the corporations have complete control over what you can view and how. Ad blocking and anti-tracking will be things of the past, and corporate websites will have a unique key from your browser to help them track you around the web. And no more hiding your identity behind anonymous browsers over Tor or VPNs.

So we found out about this about 4 days ago, and when people objected they shut down people's ability to log issues or comment on the GitHub repo. And now they're already cramming it into their browser. This is strong evidence that Google knows it's unpopular and tried to keep it under wraps as long as possible so they could get it into the browser before people had time to react.