Well, for starters the "Methodology' section opens with > Critics generally argue that Austrian economics lacks scientific rigor and rejects scientific methods

Well, for starters the "Methodology' section opens with > Critics generally argue that Austrian economics lacks scientific rigor and rejects scientific methods and the use of empirical data in modelling economic behavior. Some economists describe Austrian methodology as being a priori or non-empirical a statement which includes citations from five different sources. You may disagree with that conclusion, but I think it's clear where I found it in those two links. And if you dig a bit more into both of links that I provided, you'll find a more detailed exposition, even in sections that don't use the word "data" explicitly.