@HOOfan_1
You seem to miss a few things about my argument:
1) Souma was summoned as a Hero for the Alliance against the Demon Forces, so he isn't some random stranger, he was literally summoned to help solve a crisis. So already that's one point to giving Souma the Benefit of the Doubt. Then he goes on to introduce reforms that are all aimed at not only settling the current food crisis but also lay down the foundation for a stronger independent nation in the future, so that's a few other points towards giving Souma the Benefit of the Doubt.
2) Castor ignores the fact that the Strategic General of the 3 of them, sides with Souma, due to his personal feelings. As the leader of not only a branch of a kingdom's military forces, especially one as strategically important as the Air Force, but also a Duke, meaning that he has Civilians he needs to look after, the fact that he did not at least take a minute to think about the implications of Excel's decision does not exactly fill me with confidence.
3) Especially when he ignored that Duke Carmine's sheltering nobles known to have been corrupt, which runs counter to what Carmine's reputation was up to that point.
So that's one general who was doing something atypical, and another who never moves without a specific purpose suddenly declaring that she's for the new king, who had not only started solving one crisis, but due to his reforms was able to respond to a natural disaster in time to save as many lives as possible, on top of his well-known hunt for corrupt nobles siphoning the Kingdom's Funds for their personal gain.
I mean you have your opinion, and as you can see, I have mine, and I say that Castor could not be trusted at all with the news that Carmine was setting himself up as the Fall Guy, and remember, Souma did not share his ultimate plan with the generals either, but Carmine figured out near instantly what Souma was doing, and chances are Excel figured it out as well when she was asked to shore up the defenses of the city. Now compare that to Castor completely missing the heavy hints around the situation at hand.