I myself had to fix weird Safari and sometimes even iOS-only bugs more than once, but it's just Apple cripple it's own platform. Also even if it's annoying for web developers these things still keep our eye keen on how what we work on look in something other than Chrome.
Unfortunately Google has abysmal power over web right now and I cant count how many times I see them cripple experience for Firefox. Now they even outright saying that new Adwords interface only work in Chrome. And AMP only prove how little we can trust Google.
Apple has crippled the mobile web since iOS reinvented the category. How many years before the file upload widget worked?