I’m militant about disabling notifications. My phone is on silent 24x7 except for certain contacts that bypass DnD. I’ll get to it when I get to it.
It feels like every app asks to display notifications; and sometimes I think of how the functionality of the app could be negatively affected. (Uber, for instance, could notify me when my cab is nearby)- but once the power is given they can spam you with self-promotion.