I think the two are uncorrelated. I don't think that most people prone to mania would agree with our beliefs. I think it has more to do with us posting on HackerNews thus being interested in similar topics.
I've used https://www.freetax.com for the past three years and paid nothing. I have a complicated return as well - 1099 income, rental property, capital gains, and I receive distributions from being part-owner of a company.