That may be and I heard the same about Col. Tibbets, pilot of the Enola Gay. But post bombing interviews surely showed something different.
Depression and PTSD kicks in later. Sometimes much later. In the immediate aftermath - well, he'd just set off the biggest man made bang in history and was an international hero. I also recall hearing that in his later years he refused to talk about it at all.
In a lot of ways, I pity the drone pilots, the same way I pity fighter or bomber pilots, or the navy personnel who launch the seriously heavy weapons. They are removed from the damage and it's remote to them. To them it's pressing a button. Almost like a game. Then they see the footage from on the ground and realize - "Shit, I caused that." It's a sudden disconnect. Got to be hard on them.