Jason, strictly speaking I agree that links are not buttons. But I cannot imagine that you are unaware of the fact that a lot of people talk about menu buttons (71.000.000 hits with google for "menu buttons css") and that css3 possibilities are also embraced to style links as buttons with rounded corners etc.. So not being more explicit about this in de Overview information about CSS button styler can easily give people the wrong impression.
My advice to WebAssist would be to be clearer about this in the Overview.