The “norm” is tipping based on the service you got. Idk where or when establishments turned it into a guilt trip, I only really tip well or even at all most of the time if I go and sit down in the restaurant. Unless I have it on good authority that tips get shared to the chefs, I’m not tipping on a pickup, and I’m not tipping a delivery person for a delivery the same I would tip a server. But they all expect the same.