I think most people were cheering for the team... untill JD Vance got screen time.
Honestly, JD gave the middle finger to the rest of the western world, I think it's okay not to debase oneself by taking it silently and return his gesture in kind.
Yes, it was appropriate. Our country is led by a monster right now, and a majority put him in that position, either by voting for him outright—or neglecting to vote to keep him out. So, to the world Trump and his government represent our country, and even those of us who did vote against them are paying the price.