
For me, depends on the app unfortunately. If it's unimportant fluff, it will be instantly defeated. But if the app is otherwise useful, I might try to fight with the notification settings a bit.
But I know from seeing my mom's phone that, yeah, a lot of people just don't manage it. She has hundreds of notifications on there from things like random articles being pushed to her from the Google app. It's truly hell, it makes me so angry at the developers who made it like that, and it's no wonder she constantly misses actual messages, like texts and stuff.