Here are a few comments below that I strongly agree with why this is a BAD change by Apple. This change kills the browser UX.
> "This reminds me of the era of chromeless popup windows. I do not like this move by Apple. A site should not be capable of deciding to make changes to a users browser UI. Especially changes that aren't explained. I'm actually disappointed this exists."
> "Think about usability: the user will not have the back, the share and the tabs buttons available by default. If you are creating an inmersive game or a webapp with the main navigation controls then minimal-ui is a good idea; for content- and document-based websites, it might not be nice for the user."