thats like saying that superman should be a genocidal maniac because brightburn and homelander exist.
See I'm not justifying anything. Cap is gonna be the way he is because i want/need him to be like that. He needs to be a towering, unreachable, dismissive, oldhead militant "you are all pussies" mentality, out of touch with the modern digital forms of media and warfare type figure for the first half of the game so I look at sources that pull it off with finesse
Ultimate, Civil War, Soldier Boy, Full Metal Jacket Sergeant Hartman name drops are just to get a feeling on what the character is like
If you get spotted by him in Air Carrier halls he might make you do 200 pushups for no reason, telling you to get stronger for America, but he's not full asshole, just a militant oldhead
Plus I need to definitively show the difference between Tony and Cap treating MC like the low level grunt he is at the start of the game VS an equal in the second half, when they are fighting to get MC on their side in the Civil War because it's literally what decides the outcome