Does Trump know what the first island chain represents (let alone is) and how bad (not to mention expensive) things would become for the United States if China

Does Trump know what the first island chain represents (let alone is) and how bad (not to mention expensive) things would become for the United States if China were on the other side of it? Will there be any adults left in the room when he starts setting fire to geopolitical norms he lacks the cognitive capacity or curiosity to comprehend? I realize some if this is for domestic show but it sends a terrible message to US allies in the pacific.