I hardly think that is a persuasive argument for people on the fence. Most people in that position have no idea what MIC means.
It is a massive tide we are swimming against - the entire senior former cabinet staff coming out strongly against a sitting President. I am pretty sure that is unprecedented.
I am not sure Trump will make a compelling enough argument to make people disregard the opinion of the entire cadre of the senior cabinet leadership in the Republican party. This is different from when he was a candidate, and afterwards all coalesced around him.
Bolton’s book (now available online, btw: https://b-ok.cc/book/5577843/bb0bc6) is a long and boring foreign policy wonk-fest.
While the MSM is having fun using it as talking points, it is about as relevant to the US November election and the price of cattle in Ghana.