Even if they were to somehow show everything up-front, it would be user hostile design. No one wants to read and consider every possible permission prior to granting it to the thing they want to use

Even if there were 20 items in the list, people would hit "OK," it's like accepting terms and conditions. Most people won't read them, they're trained to hit "Agree"

The whole model needs an overhaul. Extensions should be required to ask whenever they need the specific resource, rather than asking up-front. And each gated resource should get its own prompt with its own informative design. Similar to permissions on mobile