I think some people are going a little too far in calling this sexism. Personally, I would complain about these mathematical predictions regardless of the gender of the person responsible. As others have hinted at, the issue seems to be that Frelund's model is talked about like it is groundbreaking and impressive, and because the results have been so bad, the question kind of becomes, How long is she going to be glorified for a bad predictive model? If guessing produces the same or better results, yeah, it's going to rub people the wrong way when it's put out there as a "thing" all the time (the NFL even pushes notifications each week to users on the app).