Delta has 10,000 applicants that can all fly airplanes. There is a reason they don't do a sim ride at the interview. They want people who have that "group hug" mentality. Is that the right way to hire pilots? Not sure. There are HR people out there much smarter than me, but for now it seems to be working for Delter.
Delta wants to hire pilots that won't say, "I can't help you, I'm here to fly the planes from A to B," when a customer approaches them about anything and everything relating to their flight. They want you to "group hug" all of your customers. If you aren't on board with that, that's great. Just don't complain about Delta's hiring process if you aren't.
That sums it up. "Group hug" is the culture Delta wants. If that's not you're kind of culture then maybe another airline would be a better fit for you.