I believe they are intended to support effective webapps but in practice are just used to confuse and abuse non-techy users that suddenly get 100s of notificati

I believe they are intended to support effective webapps but in practice are just used to confuse and abuse non-techy users that suddenly get 100s of notifications for random websites which they don't know how to turn off. Same as notifications from all the spam addiction-based-and-not-actually-fun free-to-play apps.