Hero in a half shell said:
HD means more detail, it also allows for smaller buttons, and while that does make cleaner menus and less obtrusive HUD interfaces, it also needs to be large enough to be readable and manipulatable, and I think developers haven't got the balance between those two, and always make it more aesthetically pleasing to the point that it looses its practicality./minirant
Yeah, I remember there was a bit of a hubbub over Skyrim's font of choice. Not just because it was small, but also because the font itself is not well-equipped to be easily seen and read in the context of being a part of a menu (whose function is basically the same as a headline font in type--to be bold and stand out above other features around it). On top of that it's a condensed version of the font, so it's even less legible than the font normally is.
As you said, I don't see why it would be so hard to have sliders for the size of menu fonts, or some sort of "standard definition" or "visually impaired" version of the interface. Yes that would cost a bit more money and the people who designed the menu might get a bit miffed, but it would be a vehemently appreciated gesture for those with small screens, or who are legitimately visually impaired.