I almost never approve a notification request. From anything, be it an app or a website. Off the top of my head the only notification sources that I have enabled are messaging apps, and even there I only have them turned on for the couple that I use for my most important communications.
I consider it a nuisance and almost an anti-feature that every random app nags me to give it notification permissions. By the same token, granting that anti-feature to even more things if something I Do. Not. Want.