That’s true, but, obviously there’s a market share difference between those two. And the fact that it’s ALWAYS ff that lags behind, it’s not like there’s cool things that ff can do that chrome can’t.
And, more importantly, there’s the browser I like (ff) which doesn’t do the thing, and the browsers I don’t like, which do.
FWIW tho, i don’t think OP will actually apply to ALL chromium browsers. I’ve been using Vivaldi when I cheat on Firefox, and none of the anti-adblock changes Google’s been making have impacted Vivaldi, and I assume that pattern will continue.
You make a compelling point, for sure. There are definitely features that fall into that category (eg page transitions), there are a lot of other things coming out these days that just make life easier.
For example, in chrome (and in the spec) you can now animate between ‘height: [number]’ and ‘height:auto;’ just the other day, I had to write a python function to estimate the highest of a menu based on its length * the line height of the list items, so I could provide an exact height to animate to. It works, but it’s hacky and gross. It would be nice to have access to the solution.