That's literally what I'm now doing for Safari, though. There are very, very few things that don't work automatically across Firefox and Chrome/Chromium/Edgium, but quite a lot where Safari wants it differently. Having to type 'apple' (apple-touch-icon) or 'webkit' (-webkit-text-fill-color) literally into your code is a bad thing in my opinion.

Yup, it's not like we have to support Safari 15,14,13 ... wait

That's exactly how it works for safari, a bunch of ifs for each version of Safari having issues because they don't even have the same issues on desktop and on mobile