So, if anybody is interested in here is an official response by Apple Developer Technical Support for this question (which is one 50$ request from 100$ requests batch of Apple Dev Program cost):
Thanks for contacting Developer Technical Support (DTS). If your WKWebView will allow your users access sites that may require permissions you are unaware of, there is no good answer. Generally, your app should know where your users are going and what permissions may be required. We are not App Review so I cannot tell you the criteria for a rejection but here is my advice : 1) Add all possible permissions that will be relevant to your app, camera, photo library, iCloud Drive access, ALL of the location permissions if you think location will come into play and whatever else you deem a scenario that can happen. 2) Limit the places your users will go and know what permissions are required to for those sites. With that said your app is not crashing TODAY (I say that because I cannot predict the future) with photos because your app can’t actually access the photo library using WKWebView, it can only access the selected photo. The same is true for Browser. It doesn’t hurt to add permissions for such but App Review is who you should contact for confirmation. Hopefully this helps. So, yep, that helps... A bit
Also
We are not App Review ... sounds like where are two companies I have to communicate with ...
Anyway, this is at least some information. Thank you all and thank you Apple for support very much.
Best regards
