As for Peterson, it seems, the total absence of passion, anger and conflict attributed to his "likability" for many. Everything that made him non-human made him the "perfect person."
Like I said, there is a lesson here... one we've learned many times. But nobody will glean much from it.
Many people--including his wife's family--said the same thing of Mark Hacking, who killed his pregnant wife as she slept (allegedly--like Scott, he was such a liar we might never know the whole truth of it). That's the thing about sociopaths: they can be so believable and likeable--very convincing. For instance, Bill Clinton actually got elected twice, the ultimate in sociopathic grifters.