Do you agree with this article? I don't -- especially the part about creating and embedding a custom font.
I think it's a good thing readers have control over how information is displayed on their computers. I once had a colleague with low vision, and for him, it was easiest to read content online if he had the background set to a dark color -- usually purple -- with the type in white or yellow.
For a designer, "user-centered" means checking aspects of your ego at the door. (It does for content folks too, just in different ways, but we'll tackle that in another post someday.)