What they are asking would be used as an annoying tool against the user in the same way today sites ask for user location or push notification (on other OSs).

Websites are not randomly asking for mic or camera because that would be creepy and visitors would just run away.

I am not lecturing, I am giving my feedback on the matter, like everyone else here. If your product is good, users will save your site in their home, don’t worry about that.