A friend of mine attended last year. He described it as "the most socially awkward people you've ever met telling you how to be less socially awkward".
It's possible that somebody is confusing this with an LW meetup, or possibly the Megacamp (that didn't work nearly as well as the one-week Minicamp which is why we aren't repeating it), or something else. Attendees of the previous Minicamp were nearly unanimous about how awesome it was, and they weren't socially awkward.
I expect that Scott's friend generally had a great experience at the camp and made a somewhat flippant and self-deprecating comment that was appropriate in a social context, but wasn't Scott's friend's most important takeaway from the experience.
And then in a few months everyone promptly returned to their status quo ante minicamp ... or at least, the available results are observationally equivalent thereto.
Your statement is false as a matter of fact. We have a one-year life-outcomes followup study planned, but the preliminary indications don't fit with 'status quo', and there are plenty of participant comments on the LW thread which explicitly say otherwise. Stop making stuff up.