Safari has been leading on the privacy front for more than a decade. They were first to block third-party cookies by default (which led to the FTC collecting a scalp from Google when they bypassed it), blocking trackers with ITP by default, and blocking fingerprinting by default [1].
Firefox anti fingerprinting breaks a lot of legitimate web features because they can be used for fingerprinting. Most notably every timestamp on the internet no longer shows the date in your timezone and every single website thinks you are a bot and blocks you or captcha spams you.
[1] https://www.cnet.com/news/new-safari-privacy-features-on-mac...