The apps that are deliberately designed to lure you in with deals/coupons so that they can more accurately track you and likely sell this data to data brokers?

I'm shocked that anybody with a hacker news account is still making comments this naive.

I said mobile ordering and you transmogrified it to “apps”, but I’ll play along with the strawman.

Yes, those apps. It turns out it’s pretty easy to just turn off notifications for them.

Death by a thousand opt-outs.

App notifications, on iOS at least, are opt-in, not opt-out. When you open the app it has to prompt the system to ask "do you want to allow this app to send you notifications". And if you don't hit "yes", it doesn't get to.

You're right.