[mkl]

To see what the telemetry actually entails, go to about:telemetry. It looks like enough for fingerprinting, but doesn't seem to include websites visited. A bit more info here: https://www.zdnet.com/article/firefox-now-shows-what-telemet...

[huhtenberg]

> It looks like enough for fingerprinting

No fingerprinting required.

Telemetry > General Data > Id is a GUID. ClientID is also a GUID.

You can clear the latter in about:config and it sticks, but clearing the former causes it to be regenerated on the restart.

[Aachen]

> doesn't seem to include websites visited

I mean, that would be China++ level surveillance. Of course it doesn't include what sites you visited.

[mkl]

Of course, but some people seem to be reacting as if that's what's happening, and knowing which sites problems occurred on would be useful for a browser vendor to know.