I agree with you. For whatever it's worth, "galen" is "crazy" in Swedish. I can't help but wonder if he's being honest with you here.
These days I'm fairly certain people like him are just psychopaths playing games with us. They see that we care about the truth, and then they proceed to fuck with us by spewing endless reams of sophistry for us to unpack. That's true. But I bet in reality, neurotypical human beings who: 1) are very intelligent, 2) feel strongly about an issue, and 3) are genuinely, severely irrational are rare. Therefore, it's relatively safe to assume that people who seem like a match are actually psychopaths fucking with us. See some recent responses to my messages for example. Intellectual dishonesty combined with hostility / shaming, etc.As much as I wish he was a troll, I think he's serious.
The opinions he's expressing are mainstream; we're the crazy ones.