Personally I leave the anonymous daily usage ping enabled in the (perhaps naive) hope that my use of Firefox being counted might help keep it afloat/popular. I guess that's not really in the spirit of a privacy-focused hardening guide but it is something that some may wish to consider.

Some may argue that the data that is included is a bit much for a "daily usage ping," an assertion that I won't dispute—but I will say that I appreciate the fact that Firefox even provides this level of transparency in the first place:

https://dictionary.telemetry.mozilla.org/apps/firefox_deskto...