[szasamasa]

in my definition an app is a standalone UX

a website in standalone mode is a web "app", so web apps are not possible in Safari if the website, even if uses all the modern web capabilities, cannot get rid of the browser bar... it is a shortcut to a website in tab mode then

in addition, we still not know which web capabilities Apple plans to disallow in websites, and will it be also disallowed in competing browsers?

is offline website with service worker caching possible? it seems to be disabled according to some beta testers...

I mean for you local storage may be not important but what a disadvantage it is for web programming if Apple clears local storage without the permission of the user as they do it in Safari tabs?

the whole absence of future guarantees is one of the biggest problems, because web programming is a strategy that companies could make now to deploy good web apps in 2-3 years...