According to the Nostr protocol, on which Damus is based, zaps are simply tips.
Apple’s quibble with the feature is its non-adherence to guideline 3.1.1, which mandates the use of in-app purchases for transactions connected with digital content. Apple is unwavering on this: “We noticed that your app allows users to send ‘tips’ associated with receiving content from digital content creators with a mechanism other than in-app purchase,” the company pointed out.
The die hard Apple fans then also go and act as if Apple are some sort of knight in shining of the big corps, it’s mind-boggling.