[ajflores1604]

I have no proof, but I feel like it's more than that. I don't think getting number of threads is fine grained enough to make a meaningful difference on identifying a device. Especially compared to fine grained numbers I've seen extracted doing audio fingerprinting with AudioContext. At least with firefox I can give the user instructions on how to enable it again if they want to and they can make the decision for themselves. From what I read briefly last night about safari, it's impossible to get a number directly unless you wanted to recompile the browser yourself. I found this package (https://github.com/oftn-oswg/core-estimator) which seems to give an estimate, but its something someone who wants to fingerprint could also implement on a library level, so we're back to square one except with worse developer and customer experience.

Offscreen canvas is also something I wish more browsers supported, along with webgl2 (need for fbo). Although, I've heard rumors webgl2 might be finally coming to safari soon.

I also wouldn't have an issue with safari taking hard stances on these things if only they allowed competing browser engines on their phones.