Earlier quoted context omitted.
Apps can know whether you granted permission?? That sounds like a security flaw.
This is basically required for clueless (and even not so clueless) users. If there's a chat app I installed 3 years ago, with no intention of giving it camera access, and I suddenly need to use that app for a video call, I don't want to be stuck debugging broken camera issues for two hours. I'd much rather have the app tell me that it doesn't have camera access.
I can actually confess that this hit me. Almost nothing on my phone has permission to use my camera, including my web browser (why???). I assume this was done in a fit of pique upon discovering that the setting even existed.
Roll on (god knows how many years later) and I cannot get into the gym with the link I was emailed to have my browser read a QR because my browser is just a grey screen. It was only when the member of staff suggested permissions that I realised what was going on.
I'm the problem, it's me