

We have to thanks Vivendi group (a shitty conglomerate from my country who killed a lot of good products) who have forced Gabe to move to online sale as Valve couldn’t adapt the bad reseller contract they had with this Vivendi (who tried later to kill their business via lawsuit).
If you didn’t see it yet, have a look on the 20 years documentary of HL2. Really interesting.





Did you cut the access to the firefox telemetry server (via PiHole i assume) before setting the parameters?
It could be Firefox trying to inform the telemetry server to not keep the data and/or logging the fact that you have disabled the telemetry.