[kirb]

That document is definitely very out of date, I don’t think any of it is even relevant any more. The unsupported features listed were implemented a long time ago. Safari does handle mouse events (e.g. hover) as best as those concepts translate to a touch platform.

On iPadOS 13 it actually goes as far as pretending to be a Mac. Developers have resorted to using hacky client-side detection such as checking for touch support to determine if they’re on an actual Mac, or an iPad pretending to be a Mac. (https://stackoverflow.com/a/58064750)

Pretty much they don’t want you to treat iPad as a big iPhone, but if they can pull that off with iPad, it implies both iPad and iPhone Safari is a desktop-class browser with almost complete feature parity.