Yep, notification ads are forbidden in Apple. I am sure that there are some bad apples but overall the notifications are about stuff happening, not stuff that someone wants to sell me.

I keep hearing that iOS should catch up with Android notifications, that Apple is so far behind but when I look at an Android phone it just feels overwhelming. I literally have better things to do than studying the information and action options in the notifications.

Notifications should be treated as an extremely premium attention grab. I like Apple's way of doing it much, much better than Android and I feel unease when I think about someone in Apple, hears the Android-like notifications and thinks it's a good idea.