There are legitimate uses of notifications from websites, like being told from my webmail that I've received a new email. Or any other messaging service. But no, let's throw the baby with the bathwater because some blog sites ask for notifications to spam you.
Apple isn't crippling PWAs because it cares about the user. They get more money if you pay for an app on their App Store. Simple as that. In every PWA thread I keep reading the same Stockholm Syndrome argument that Apple are crippling PWA to save us from the notification spam. Meanwhile I have native apps spamming me with offers.