What is so “real” about the need for notifications? Apart from messenger/email for which we already have dedicated apps both on desktop and on mobile, for what else would we “really” need push notifications? I don’t really want to be interrupted by anything that isn’t urgent, and stuff other than messaging is not urgent at all (I’m talking browser interactions here, I suspect and hope that things like nuclear power plants don’t rely for their “urgent” stuff on browsers’ capabilities and I also hope they don’t have anything to do with easily-hackable browsers at all).