With the number of people concerned about privacy, it is a wonder why chrome is even popular.
Firefox has been and in some cases still is far, far worse than .2s slower, but even not considering that, the reality is that chrome has more support and thus gets more development and attention.
This results in some websites not working properly or at all on Firefox, while this isn’t Firefox’s fault it is a thing nevertheless
I’d be curious to know these sites because I’ve never had an issue with firefox loading sites, or even improperly. I do understand what you’re saying though. I also stick with it because of the privacy “edge” (pun intended) over chrome+variants and I don’t want a browser monopoly. Even though I’m just 1 person, it’s something.