As a person, he reminded me very much of Vince Belugosi, the prosecutor who won the Charles Manson case and wrote "Helter Skelter."
Yes, he wasn't "emotional" but he seemed to me to be angry in the way that TJ's get angry, by using very clear and empathic and sharp speech and criticism. He seemed very frustrated that the rules of the system (in his understanding) had been violated and that the empowerment he had been promised and the support he was supposed to receive had not been there; it seemed he felt left out to dry. (But he's expressing all of that frustration in clear and very critical impersonal language.)
None of that says whether the large-scale claims are true or not, or whether his marginalization was worse than any other... but it does say that he went in with expectations of fairness and of being empowered, and for whatever reason, he felt that his hands were tied and he could not do the job for which he had been appointed, and that this was very wrong -- that he had been compromised by those who were supposed to be supporting him.
He seemed "credible" to me, in that I would take his concerns seriously.
As far as the in vitro fertilization goes, I think this is an indictment of THAT system... not necessarily the stem-cell process. A very LARGE problem is that, in the desire to give birth to one's own kids, people are paying to have MANY embryos created in hopes that one of them takes... and the others are being discarded.
If one truly believes that each of these embryos is a human life that morally needs to be preserved, well, how can one justify the "over-creation" of life simply for the purposes of reproducing and then placing these "human lives" in cold storage and thus limbo for decades to come? Isn't that also a violation of life, and using life for one's own gain, objectifying the embryo?
If the embryo is not worth enough to allow to gestate (and thus will never be born anyway), why should it be kept in eternal limbo? That seems to me, morally, to be equivalent to murder... but just not as messy or inconvenient.
In any case, I fear the day when we just view human embryos as "material to be spun and unspun and used as a commodity" ... the attitude that goes along with that does not bode well for a culture... but at the same time, the black-and-white extremes do not seem to do moral justice to the issue.