I mentioned something about a SCOTUS opinion and he was very surprised that the court published its opinions. We delved a bit further and he also didn't realize that you could read bills or laws or executive orders.
I have never been more alarmed or scared about the future of our democracy.
Like you I would classify most of these people as intelligent, and although literally qualified, (possession of university degrees at various levels), they are actually completely uneducated.
Between that and daily life being a grind for most people, it is very understandable for someone to not know that the SCOTUS does these things.
Honestly, while everyone (myself included) should be more aware and involved in government, this blissful ignorance is a testament to the stability and freedoms offered by our government.