[Tenhundfeld]

To me, it's clear the author means, "Programmers are not different [from other types of computer users]; they need simple UI's [too]."

You seem to be interpreting it as, "Programmers are not different [from each other]; they need simple UI's [that limit their expressiveness]."

I guess? Honestly, I'm not really sure where your comment's coming from. Please elaborate.