This argument could make sense to me in a world where powerful corporations, PACs, and monied individuals didn't wield so much control over the media and politics. These domestic entities have far more influence than the CCP, and to the average American I don't think they are any less harmful. These entities profit from disunity and a chaotic government the same way a foreign adversary might. The current divisiveness in America is due to the outsized influence of powerful domestic actors. They are a much bigger concern.