Can't you switch profiles on your phone without scanning an NFC tag already? Couldn't your app allow profile switching without requiring any NFC tags?
It's not clear to me what the NFC tags add to this experience.
If unblocking via software is easy too, this doesn't really work, but I could see giving the physical tag to a friend or leaving it somewhere in a different building causing enough friction for me to reconsider if I really want to go to the effort just to look at some news headlines.
on iphone, the built in screentime app is just a face id approval or your pin code, but what if instead you had to request approval and your friends on FindMy were the only people that could approve, by consensus