You know, my first thought when I saw used rides for sale was, "gee, I sure would love to take that to BM so I can kill lots of people."
I had an idea that I thought might be fun. It didn't get far past the fantasy stage for a myriad of reasons (financial and otherwise) but I'd sure like o think that I would/would have it inspected for safety before developing a project around it (please note that the same cannot be said of some other, less notoriously "unsafe" things that occur at BM).
Regardless of its inspection and safety clearance, again I reiterate that you don't have to ride it, or be anywhere near it, for that matter. And, if you chose to do so anyway, I'm quite positive that you, of all people, have thouroughly read the back of your ticket.
Look, most people are familer with the rooler coaster that's been brought to BM the past few years. I don't ride it--I'm scared shitless of it. But I would not deign to tell its creator that he couldn't bring it becuase someone might get hurt riding it. If that were the case, what about art cars? People have clearly gotten hurt--and died-- from those. I'd venture to say more than any "carnie" ride brought out there (and I'd probably be willing to put money that those statistics--cars vs. carnie rides--hold up in the default world, too).