Attending the event and participating are two different concepts that I think you are trying to conflate as being the same. The people attending the event were told to pack up their stuff and leave. None of them were stopped or questioned. I was not one of them. Because I was not one of those attendees that left, by the ranger's logic, I must be involved in putting the event together. Because I'm a sucker and tried to help others, it gave the impression I was in charge.
As you can tell, I'm intentionally not going into the minute details. I'm not Sam Bankman-Friedman talking about a criminal case that I had to deal with. It is however something that I do now have a personal experience with fines from the breaking the rules in a national park. If the fines the fines for tossing a lit cigarette that could burn down the state are not at least in the vicinity of what I faced for a trivial offense, I will be very unhappy.
This is well past where I've wanted to take this, and I'll take it no futher