So it is only treasonous for a person to question the wiseness of a military action if there are ground troops involved? Great mental gymnastics there.
I've given these matters some thought, actually.
(1) A pilot on a sortie who is extremely busy throughout and who will be back on an aircraft carrier or an airbase in a few hours inhabits a different morale environment than a soldier deployed on the ground, whose days alternate between vicious combat, and sitting around for hours watching and waiting and keeping ready.
(2) Logistically, a bombing sortie is a much less involved matter than a large ground deployment. It is easy to stop a bombing sortie on a second's notice by radio and have the pilots on their way out of theatre the next minute.
This is not possible with a ground deployment - once troops are committed it takes months to extract them.
(3) Deploying ground troops is also very significant from the viewpoint of national reputation. A bombing sortie goes in, hits or misses the intended targets, and leaves. It's quite binary.
A ground deployment requires time to achieve objectives, those objectives are multifaceted, and the perception of the deployment's activities are often as important as what is actually accomplished.
(4) As a result of all these factors, if you tell a pilot: "I'm not sure that sortie you ran yesterday was a good idea, now that I think about it" the pilot can reply: "Well, I'm back at base. The events you are discussing now belong to history. All I know was that I was tasked to destroy an enemy artillery emplacement, and I blasted it to smithereens. I did my job."
If you tell a soldier: "Well, you may have risked your life killing large numbers of the enemy in close combat, you may have lost some close friends, but now I think that the whole thing was a bad idea. Your work is completely unappreciated and your efforts were emaningless. Enjoy the next few months as you engage in an orderly redeployment" what is the soldier's reaction going to be?
Where is his morale going to go?
What does that make the USA look like - a country that betrays its own troops' sense of mission, a country that backs out of its obligations out of ennui?
It takes mental gymnastics to equate the two kinds of deployment.