IMHO I don’t think it’s a Delta thing. It’s not just a customer service issue either. Had this Skipper been in a different uniform with a different carrier under the same circumstances, he, along with the majority of us would have done the same thing. This thread would have a different title… “Are you this Brand X Captain?”
Delta did not train this person to be a decent human being… That came from his upbringing and his heart. Bottom line is he’s a good person, and would have done the same even if he were not a pilot.