Comment by sfink

Yes, it's the stock configuration to be not broken. If you are ok with breakage in exchange for less fingerprinting, the config setting privacy.resistFingerprinting is right there: https://support.mozilla.org/en-US/kb/resist-fingerprinting

It is an uplift from Tor, and I believe Tor just enables it in their build, though it doesn't end up being quite the same. Tor is always going to be better for this.

But turning it on in the stock Firefox configuration would be suicide in terms of market share. When "I want maximal privacy" fights "I want this site to work", guess which one wins?