Kudos. Perhaps your sibling is more intelligent than all of mine!
He’s a Phd, and his first job was in DC for the feds the last year of the Carter administration. When I told him I voted for Reagan (my first ever vote), he was shocked. Two years later he had turned into a raving conservative. He hated working for the feds, couldn’t believe how little federal workers actually did. It didn’t take a lot of intelligence to figure that one out.