None of us here ever knew the man, and the only reports we have on his life are from a pseudo anon author who admits that they also did not know him very well. That any of us, including the author, are justified in calling him "villanous" is a big stretch in my opinion. It feels more likely that the author, and perhaps you, simply disagree with the decisions he made. Which is fine, but a far cry from villainy.
We don't have a 24/7/365 video feed of the man's life with which to throughly judge him on, this is true. So casting him as a villian based on this shadow caricature version of a story we've been told might be unfair to the actual person. We're not Michael at the heavenly gates or Osiris or Anubis though, we're just going off of what's been written. Do the actions of that man as described not qualify as villainous to you? It’s small, affecting only the lives of those in his immediate vicinity. But it’s still not good. Maybe little V villainy not big V villainy like Voldemort?