The Apple/Damus situation seems like a clear misapplication of the rule. Venmo/PayPal do not get charged. The rule only applies when an app is “selling” content. Given that the lightning transaction doesn’t even occur from Damus (you need a separate wallet) and Damus has no interaction with lightning, I find it a stretch to say that Damus is selling content for money.

Damus is an interface that facilitates info transfer between users, including payment receipts - not the actual payments. .