Yes. ~/.mozilla. Its annoying.

You can fix it with a hack by putting a shell script in your path (before the original firefox) that consist of:

#!/bin/sh

HOME='/home/engywuck/.local/share/firefox' /usr/bin/firefox

Call that instead of the original firefox from now on. it will create the “librewolf” folder in ~/.local/share and chuck its junk in there.

Edit: This bug has been open for TWENTY YEARS.

Honestly ridiculous.

The data collected sounds like a nothing-burger. Of course they collect the data you upload, and of course they store data (like messages) that need to continue to be networked to clients.

How they use the data does sound like corporate trash though.