Hard disagree on Leverage. They’ve absorbed a tonne of philanthropic funding over the years to produce nothing but pseudoscience and multiple allegations of emotional abuse.
I’m not saying Kerry wouldn’t know about this stuff—I think he likely does. I’m saying a) that he was one of the ‘top leaders’ he refers to, so had ample chance to do something about this himself, b) he has a track record of questionable integrity, and c) he has potential motive to undermine the people he’s criticising.
I’m unclear how to update on this, but note that Kerry Vaughan was at CEA for 4 years, and a managing director there for one year before, as I understand it, being let go under mysterious circumstances. He’s now the program manager at a known cult that the EA movement has actively distanced itself from. So while his comments are interesting, I wouldn’t treat him as a particularly credible source, and he may have his own axe to grind.