I think that's an uncharitable take on his position. He's criticising bush era wars like in Iraq and implying the second world war, which is very much a moral war for the USA.

He is invoking a romanticised past but that's his whole character arc - believing in the America that could be, that ostensibly was, and how far they've come from their values.

The connection to MAGA is superficial. His speech is properly quixotic- designed to inspire the best in national identity, even if it's foolish