Protectionism is different from hawkishness. If he were hawkish he'd be calling for heightened US carrier presence in the South China Sea and calling Taiwan independent. He just wants to keep manufacturing jobs in the US - I doubt he'd sound any different if those jobs were going to Kenya or Turkey or Ireland or any other country. And it's not like it isn't a policy without it's own problems - ask any third world Maoist about labor aristocracy and they'll tell you - but just because it sometimes lines up with hawkishness doesn't make it the same thing.