Well if anything breaks I suspect my add/script blockers first and in like 9/10 cases that’s correct. Had turned fingerprinting resistance on since making that comment three weeks ago, and so far I didn’t run into any problems beyond theming. Although I admittedly only frequent a small set of websites.

I found this in about:config, defaults to true apparently: privacy.resistFingerprinting.randomDataOnCanvasExtract

But you have to enable privacy.resistFingerprinting for it to work first. I enabled that and now the EFF test says “randomized” for the hashes but also Lemmy went from dark to light theme somehow.