This: Fennec has better security configuration than Firefox about:config settings in regards to telemetry and whatnot.
Mull is also great! Even more secure and better at stopping phoning home, telemetry, and fingerprinting. Though, Mull tends to break quite a few websites. I use Mull, and switch to Fennec selectively when Mull doesn’t work
Just sharing stuff from blogs I like. Don’t like it, stfu I don’t see you contributing anything to the site