This is really only necessary in iPhones because the notification management compared to Android is, to put it simply, years behind.
I recently noticed my boyfriend had literally dozens of notifications from all apps that could only be classified as ads, such as calls to action from deliveroo saying "try this restaurant", "new deal for this or that". When I said to him "why don't you disable those?? You're getting so much spam on your lockscreen!" It turned out you can't remove those without completely disabling notifications for the offending app.
So for Deliveroo, Uber Eats, Uber, etc to be any useful at all and let you know where your taxi/dinner is, you have to grant them a free-for-all access to your lockscreen to post whatever they want!
On Android I only get a handful of notifications that I do care about so I don't really need a summary. Uber Eats is allowed to tell me about the status of my delivery period.
I don't know how Apple still has such an anti-user permissions model for notifications. Android has had granular control for what, 4 years now maybe?