It's a polite way of saying "stop putting crap in your resumes". Don't encourage people to do more of it
In all seriousness though, have you ever tried to analyse unstructured text? It's hard. How would you realistically improve it? Do you start with a preconceived list of technology key words and count them in the resumes? People misspell words. Words have multiple meanings depending on context. Technologies change and you might miss key words. Or you could count recent Stack Exchange topic tags, but that only shows the latest fads people are struggling with, not what they are being hired for. Survey a bunch of people about what they do at work? Too expensive. I think this is a really good start in spite of the limitations.