Earlier quoted context omitted.
Learn. That's what I did. The issue is that many designers and engineers loathe Usability and Accessibility people (like Jakob Nielsen and Don Norman). For me, it all started with Don Norman's excellent book The Design of Everyday Things [0] (nee The Psychology of Everyday Things ). Reading that book changed the way that I view the world. I can't walk through a door, anymore, without evaluating its affordances and us…
For a long time nielsen groups webpage was one of the uglier websites on the web in the name of accessibility. That's part of where mistrust of them specifically comes from.
They have the right idea (I have taken a number of NNG classes, over the years), but they are only one dimension, of a multi-dimensional space, and I have found it to my advantage to take a "hybrid" approach (which means that everyone is pissed at me).