Yes, and yes, and yes.
I am quite open minded person and sometimes do silly things too, just because I can and want to, but so far they kept being quite realistic. By no means I think throwing a needle at the stone golem is going to harm him somehow magically.
Lately I started feeling the same disappointment - can't take things seriously for most of the time, when things like that happen. Yesterday, sadly, I felt absolute rage. :/
Yet, I have to agree with Geri here - it's up for the event host to prevent things happening. So I suppose, we should call out for the event hosts - look at whatever people write, keep it clean.