Grady Hillhouse is (per his /about page) a professional civil engineer. He just did a YouTube video on a screw-up that has launched a fleet of big-money lawsuits. He has a wife and little kid. If he is making sure that he won't be the target of any deep-pocketed legal action...that sounds pretty rational to me.
Also, I've noticed that we (computer professionals here on HN, roughly) don't always think that the general public is particularly rational in their choices about computers. Perhaps most professional civil engineers have similar feelings about the public being rational in their own area of expertise?