Trying to avoid... but no...
Fair enough to the OP, you had to be there, sounds like you got a smile. So, yes, well done, friendly, good.
On the serious side, in any game, stopping early is a risky move as there might be someone who will use it against you.
In any league game, stopping before full time is a no-no because you might get in trouble with the league. Stopping early because a player/coach asked is a nightmare waiting to happen.
In more serious leagues I have been asked to not play added time by a losing team, or both teams. Even if you know the league and don’t think GDiff is important IMHO don’t do it. It will get used against you. My response on several occasions: smile, say it’s the same for everyone, make light of it, play a respectful amount of added time.