I use Mozilla every single day and have done so for about 6 years now. Personally I don’t feel like I’m missing out on anything but ads if I don’t a Chromium based browser.

Exactly? The interface is god awful, if you’re running a dark theme then your icons will be unseeable (black on black) unless you enable experimental features. The interface is straight out of the early 2000s.

Erm. I don’t have any experimental features enabled, and my icons aren’t black on black as far as I can see.

I’ve been using only Libre Office for about the last six years for the daily running of my business and I have no problems. Furthermore, I despise the ribbon interface, give me an interface from the 2000’s any day.

Fonts look fine here under FF:

https://i.imgur.com/49rQvIH.png

Been using FF since forever, never felt my experience was in any way slow compared to Chrome.

I think it’s a Java thing?

I never stopped using Firefox, and I never had a problem with anything but Government sites.