Thanks for sharing this! Author here. Looking forward to the discussion this sparks!

Chrome is becoming less innovative then other browsers now. They recently rejected adding vertical tabs when most other browsers have adopted them. Chrome is basically becoming a "television" browser where it is aimed at advertisers and not users.

> Chrome, the browser itself, hasn’t made any significant improvements to its user experience in years. (By comparison, Firefox has shipped more UI updates in the same 5 years, including ones like sidebar navigation for tabs

Firefox has to ship more to just catch up to where Chrome is. Whereas Chrome is extremely usable as it is today and they ship tons of minor improvements behind the scenes which make it that. I'd actually be more concerned if Chrome was shipping a bunch of "improvements" as they would be more likely to hurt the user experience than improve it above a certain cadence.