I agree but after watching voir dire filter out anyone semi-literate on more than one occasion, I don’t think it much matters. The juries are full of morons because that’s what both the prosecution and defense want the juries to be.

Be careful confusing "has no opinion" with "moron". The voir dire process tries to select for people who have no opinion: it's specifically designed to filter for neutrality, because if the trial hasn't even begun yet and you have an opinion, that's a problem.

There are some people - oftentimes very literate people - that mistake having no opinion for being stupid. It's very far from that. Oftentimes being neutral and keeping your mouth shut is the smartest thing you can do. There's frequently a popular image of someone who is smart as someone who is very quick to form judgments and articulate them with little information; this can be a useful skill in certain situations but is the opposite of what our legal system wants in a juror.

Ah I think there might be a trans-Atlantic difference here and we're talking past each-other a little. I'm in the UK where jury selection isn't really a thing, selection is at random off the electoral roll and the filtering is mostly based on who has a good enough excuse to not do it.