Good games are pretty good at discoverability like this. I remember playing GTA IV or V and if I hadn't been using some skill, it surfaces tips. Apple has to be slightly more careful because it can't just spam you with "Double-tap to Apple Pay," but recognizing that you just used Apple Pay, but you unlocked you phone and did it from Wallet might mean there's a new skill they can show you.
I was thinking about this as I recently started playing "Ultimate NES Remix" They are quick mini-games made from old nes games. These quick little mini-games really make good tutorials on how to actually play the real game they are taken.
