Right, and it makes me wonder if it'd be better for Firefox and diversity of browser engines for FF to use WebKit.

Looking at the StatCounter Aug 2020 stats [1], ignoring browsers less than 2% usage share (because I'm lazy), it looks like:

Chromium based = 74.53%. Safari = 16.82%. Firefox = 4.09% (but effectively 0 on mobile).

And that's with Apple forcing WebKit on Apple mobile devices.

Throwing Firefox's 4% into WebKit could be like strategic voting to strengthen the opposition, stop splitting the vote, and reduce Mozilla's cost of maintaining FF (keeping their recent layoffs in mind).

[1]: https://en.wikipedia.org/wiki/Usage_share_of_web_browsers#Su...