FU Firefox and Mozilla

Mullvad browser is built on Firefox.
I bet they did not remove all the telemetry bits like librewolf
Apparently it's a powerful anti-fingerprinting/profiling browser. Typical tricks to consistently identify someone just by how their browser itself responds are supposed to be very heavily mitigated.
Doesn't it mean basically nothing? Like, your browser can cry and piss its pants sending "do not track" messages all day long, and the website can just go: "hmm... Nah...)