Too many applications abuse notifications and background processing anyway. If you need those features, you have to convince of far more value before I'll install a thing.
In the short-run anyway...
I allow certain apps to use notifications because there are things that I want to be notified about. My card balance from the Starbucks app, or breaking news from the New York Times app.
Both of those companies started abusing notifications. Their apps are no longer on my phones.
I'd wager no one is. Snapchat has 200 million users. There's some 4 billion people on the internet. Niches are niches, and no one serves everyone.