I won't name names, but all the really outspoken Libertarians I've debated over the years were gay. (To be fair, most were from SF). To my knowledge, I don't know of one who was a hetrosexual, let alone married with kids. Despite couching their hatred of Lincoln in lofty ideological terms, I think Lincoln's (and Bush's) reverence for God and Biblical principles consumes them.
It's not just Mr. Raimondo, but the Libertarian party seems to have a foam-at-the-mouth hatred for the Jewish state (Israel). Perhaps it's history repeating itself. The Pink Swastika: Homosexuality in the Nazi Party.