Yeah, most websites do fingerprinting. I doubt Firefox is immune to it either. In fact, it probably makes it worse since there's so few people using it.

https://amiunique.org/fingerprint shows me as being unique in both browsers, and that's without even taking into account IP address which narrows you down to people on your connection anyway. Only a VPN will hide that.

They don't need cookies to track your visits. Yet apparently they still need to ask if you want to share data with 2184 trusted data partners every time you visit without them, so maybe they can pack that the fuck in.