The remaining notifications are _still_ frequent enough that no single app can expect to get my attention with a single buzz.
It's not like apps don't upsell to when I _open_ them and have to swipe away ads before I can use them. So why give them another channel?
25-years ago me is going to roll his eyes so hard, but you know where I don't mind slightly-targeted ads? My email & my doormat. Send me a catalogue, I love a catalogue.