Deep - are you notifications grouped together?
All of my Gmail notifications get bundled together as one, so I can just swipe away the stack of emails and keep the other notifications together, as I wish. Such as “Gmail (14)”.
When I get a build up of notifications, I shall do a screen record to showcase what my notification shade behaviour is.
In my use case, I can swipe away the notifications I don’t want to clutter my notif shade. Also, I agree that clearing all notifications with “clear all” isn’t always desirable.