Thank you for all the responses. I'm sure he would be happy to know he has so many defenders. I'm still not sure how I feel about it.
That's fine to feel that way, but I'm not sure why you'd discount his other advice due to that.
If John Bogle started going on about how the moon landing was faked, and Warren Buffet became a 9/11 truther (and they weren't just going senile, but were as sharp in every other way as always), that wouldn't affect my opinion of their financial advice.
I'd research what they said (both the personal opinions and the financial opinions), agree or disagree with it, and move on. Their opinions on some unrelated topic isn't relevant to me when researching the financial opinions. If I research their financial advice, and it makes sense and is backed by data, what do their personal views have to do with anything?
Dismissing something due to unrelated beliefs of the person who said it is intellectually lazy and a fallacy.
By all means, dismiss UraniumC, but only after careful consideration. Likewise, consider carefully what he says about investing. Research it. His opinions on the best flavor of cheese or ugliest car color have nothing to do with his opinions on investing.