that's nice for the admin who would have taken time to upload these.

What is the problem actually? That he wants to submit them through the forum faster than what you do yourself?
As I did not follow the start of the discussion, I did not understand that you actually also get pics from that show, but that you get them a little later than what he submits.
Wasn't there some more subtle and gentle way to discuss that?
Indeed if you can get the pic few days after the show aired, it is maybe easier that you do the pics for that one yourself, but there are better way to explain it than how you did, I think