Safari is still the new IE. Well, not really "new", it has been IE all along. It's the only non-evergreen browser that remains, and I don't get why this isn't mentioned every time Safari is brought up. All of their spec implementations are meaningless when the only version that matters is the one forever stuck in whichever oldest iPhone n% of people still use.

Caniuse is pointless, their new "baseline" score is pointless; as long as enough people keep using their (perfectly fine and working) iPhones after official support stops and as long as they are not allowed to install a different browser (engine), that's the only data point you need to look at when choosing which browser features to use.