But since Chromium has soooo much of the market share, Firefox will always be playing catch-up. If Google decides to go full rogue and ignore W3C specs entirely and make up a bunch of their own shit, that devs then start to use because why not since the majority of their userbase use a chromium based browser, then Firefox can easily be taken out.
I’ve observed the same thing about YT music’s audio. It’s actually a bit frustrating because YT has the better quality, it’s louder too (Spotify app is strangely quiet in comparison), the algorithm is nicer, I actually even like the UI a little better. But the queue system sucks donkey balls, there’s no cross-system control, and no jam so I often go back to Spotify when with friends.