Why not? If it’s a site by site authorization, it can help replace many apps.
I have notifications disabled on my browser because for every 1 useful notification I got, I get 50 requests to send me notifications because I visited a website once.
Same here, it's far too annoying.
Don’t you get them anyway since sites usually show their own push notification prompt before burning the native one?
I assume as a user you don't have any notifications from any app enabled.