As mentioned by others, make a zap a tip would be the easiest course of getting around this nonsense from Apple. But their not stupid, they want their cut and we will be back in this position in short order either for the same reason or another.
Their needs to be a concerted effort for Damus and other clients reliant on an app store to make an app accessible via a web app as a redundancy and push that as a primary method as this won't be the last demand big tech will make. I'm waiting for the day they remove Damus, Amethyst, Onyx, etc for violating content moderation previsions in their TOS because we don't have moderation here.
It's best to think platform agnostic and not be reliant on another for permission as to what you can or can't do.