I have notifications on for Uber Eats because I want updates when I order a food delivery. Of course, the app takes this opportunity to randomly (though infrequently) send me ad notifications during the other 98% of the time. Just this past week I've seen notifications for getting my Easter shopping done, and something for "National Burrito Day" which I'm sure is totally a real thing.
Unfortunately, lots of apps are like this. But are they annoying or frequent enough that I will turn off notifications? No, because I'd rather put up with it than have to remember to turn them back on the next time I order something.