[evilduck]

I think this post paints a one-sided picture of the worst sort.

The user groups I've been to are very informal and relaxed. "The Podium" may have just been "the chair at a table next to the projector" and "redoing the demo" may have been borne from a group discussion where there was enough interest from everyone (possibly including the speaker) for Yehuda to plug in and demo his way. Yehuda is well known for his contributions, I can't imagine any group not being interested in what he had to say on the matter.

We don't know and we shouldn't judge based on this incredibly vague and incendiary post from a bystander. It would hold more merit if it was at least the original speaker complaining.