Any pundit who thinks the ultimate goal of exchanging goods and services with another country is regime change is a lunatic.
Now, did he really believe that? Was he just selling the American people a bad deal? The end result anyway is that this is precisely the argument that was made, and thousands believed it.
The might have some notion of "big bad central state", and China was and remains that.
In any event, some rhetoric to grease the wheels politically absolutely was in order.