Weird. This is not at all my experience. I haven't been using Firefox for 30 years, since it hasn't existed that long, but I've been using it since it was first working.
[Edit] I still remember Coherence also [1], yes I'm that old ;-)
[1] "Cameron made a joke every 30 secs - noone laughed in the audience though I found them all funny." https://svese.dev/i-want-to-meet-cameron-purdy/