But then you lose the benefit from the apps that don't abuse them, defeating the purpose of the above post's suggestion.
I'm not the person you're replying to, but I'd rather make the active decision that I want notifications from an app than passively deciding an app is allowed to until it annoys me.
But how do you know if the notifications are helpful if you have not seen them from a responsible app?
A large part of them can be inferred from the app's purpose. I don't need notifications from a game, pdf viewer, or photo editor, but I want them from my email client.