I certainly have no insite into the inner working of our Government and unlike most on here, I'm not a military expert. That being said, you can probably draw some conclusions about the Dept of War's actions since Trump has been elected. You touched on this, but it's a good idea to review the part of bringing in a staff of know-nothings.
Since Trump took office just over a year and a half ago:
Air Force General Charles "CQ" Brown Jr. was fired from his position as Chairman of the Joint Chiefs of Staff.
Air Force Vice Chief of Staff General James Slife was dismissed.
Air Force Lt. General Jeffrey Kruse, head of the Defense Intelligence Agency was removed.
Army Chief of Staff General Randy George was asked to step down and take early retirement.
Commanding general of the Army's Transformation and Training Command General David Hodne was removed from his postition
Navy Secretary John Phelan was removed from his post.
Chief of Naval Operations Admiral Lisa Franchetti was removed from her post.
Adm Holsey, who led U.S. Southern Command was removed.
Adm Lacore who was chief of the Navy Reserve was removed
Adm Sands the head of Naval Special Warfare Command
Head of the NSA, General Timothy Haugh was ousted
That's a lot of leadership just GONE. And the thing is that these are political moves, there's no performance removals here. NOW, if you were a 2nd level guy and you saw all these top level guys dismissed for presumably speaking their minds and ideas, would YOU be giving that same advice, or would you be keeping your mouth shut.
Now I'm just going to throw something out there that's going to anger the followers of the greatest military leader and military mind of our time... DONALD TRUMP. Maybe, just MAYBE, a guy who's never served a day in the military or commanded troops actually DOES NOT know as much as the his Generals do. AND maybe just MAYBE a former Major in the National Guard who's our Sec of War doesn't know as much as the generals either. Is that too crazy an idea?
So following this crazy idea a little further, perhaps Trump and Hegseth had some bad ideas about the war with Iraq. Like maybe we bomb the crap out of Iran again, and they give up quickly and the US wins. And MAYBE some of those folks above that no longer have jobs pointed out that the Iran government doesn't answer to it's people and as religious fanatics aren't exactly rational or predictable. AND that you don't have to be that effective to close the straights. Just lauch a missle every few days and the folks that own oil tankers worth millions of dollars and carrying 100s of millions of dollars of oil wouldn't want to risk their investment on "You'll PROBABLY get through just fine."
So IMHO, you've got a bunch of folks that KNOW that if you speak up and it isn't what Trump and Hegseth want to hear, you WILL lose your job. That's what I think is going on.