How much information do app devs get when customers disable app notifications from their app entirely? Some apps (especially food delivery.. doordash, i'm looking at you) have such spammy notifications, I tend to disable notifications from the app entirely unless I'm actively using it (eg, an order is pending).
I allow very few notifications on my phone, and nearly all the exceptions are iOS built-ins like Mail (which I still heavily restrict). Honestly, I think the only non-Apple exceptions are my VOIP softphone and Teams.