I was living in NEPA when this "wonderful" story happened. Now, it's turning into a litigation horror. https://bestlifeonline.com/news-restaurant-wants-to-sue-customer-over-3000-tip-he-left-for-waitress/
Buyer’s remorse on a charity donation/gift. I imagine after the social media “glow” wore off the person decided it wasn’t actually worth it to them.