Lior:
I don’t see why the Torah being present affects anything. It neither adds to nor detracts from the fact that the celebration is a celebration of Torah. Sure, it’s nice to have a Torah present if that is what you are celebrating, but from a spectator’s point of view it doesn’t make the action any more or less enjoyable. Your various examples are not quite comparable to this situation. If the program for the siyum hashas was that those who completed daf yomi will dance around for three hours, and if you didn’t finish daf yomi, you can’t dance, I would show up for five minutes and leave. (On Simchas Torah too, I wouldn’t mind watching others dance if it was only for a few minutes.) At a baseball game or a concert or any professional performance, I am not going in order for me to do something. I am going to watch something which is inherently enjoyable for me to watch. Unlike the Simchas Torah proceedings which are not. In fact I probably would not go to a baseball game, precisely because it is too boring for me to watch for three hours.