For websites this seems ok for me, but for apps that run inside wkwebview, I think there should be more control about this behavior. You can't zoom normal apps so this would make the Usebility properly worse or unexpected.

Oh, hmm, good point, I missed that subtlety. Yes, apps definitely should be able to prevent zooming.

(Purely from a personal perspective, I'd prefer that people who made web apps didn't because they're a much less good user experience.)