[uncharted9]

Cover Your Tracks shows this kind of obfuscation strategy as "Randomized Fingerprint", but it only shows it for Brave, not for Librewolf when I tested it. Brave fingerprint is unique but it randomizes, while Firefox doesn't.

[IggleSniggle]

It's a setting in Firefox that is off by default because it can make some websites super annoying to deal with. But it's easy to get to, and allows you to be totally random per request or per tab-session, iirc

[akimbostrawman]

having a unique fingerprint in a group (such as tor browser / resist fingerprint enabling browser) can be better than a individually semi random unique one