I think it is the best part. The movie is not about the buildup to a domestic civil war or good guys vs bad guys. It is about the horror of civil war, the loss of civil structure, and the coverage and narcissism / mentality of those who cover it. The reality of war and what it does to citizens and the press hunting glory.
Adding the politics or worse, the gi joe vs cobra aspect to it would honestly ruin the movie to me. I was pro the union naturally more until they gave more (just enough) exposition on the president. It is clear what side is responsible for where we’re at, which is what makes act 3 feel more palpable. More than that, and we’re in “Olympus has fallen” territory.
I hear you but they kind of implied some things about the president that would make one think he was 'bad' with the little they did give you. For the other factions nothing really was shown about the hand they play. I`m not saying they should force feed us who is good vs bad, but even putting little things out here and their so we could connect the dots would make sense. For ex unless I missed it, with Meth Damon we don't know what 'side' he was on even though we could get the gist of his ideology. It's fine to not do it but like I said if thats the case we could remove the little nuggets that implied the president was 'bad'/overusing his power (the mention of the 3rd term, dude wanting to give the speech/last words to him implying this was all his fault, etc)