Yeah no. Apps using push notification for marketing/dark purposes is super irritating and for that reason I block notifications by default from all apps.
You say that, but you are in a minority. Most users just mindlessly click Allow. Its an amazing power - being able to appear on someones home screen instantly at anytime with any message - but a privilege. So having each notification be useful and actionable is key. In addition to not flooding them with too much frequency.
Funnily enough, we also sort of failed to capitalize on push. We didn't even ask for push permissions in the first version of our app! Eventually we found the right push product for our users, but it's still the case that a lot of people have them off by default or prefer to be contacted by email.