Maybe not everyone, but definitly a majority. I'm not talking about learning assembly language, but learning some HTML/CSS/Javascript (if properly taught) seems pretty simple to me. With enough effort and youth (ie malleable brain).

It's crazy that programmers think this to me and just a form of ingrained tribalism that tells them that what they do is somehow special. Probably because they get such crazy time-valuations in terms of salary. But that's just a supply and demand curve.