I haven't looked into the Equifax hack, but plenty of highly competent programmers have music degrees. Rich Hickey for example. (source: https://gist.github.com/harfangk/f98e627f7567b7b5741fe0c239b...)
It couldn't be more ignorant to think that a music degree suggests anything about someone's technical competence (other than maybe a weak positive signal of intellectual breadth). One expects that from media outlets but to see it crop up on HN was shocking. Among people who ought to know better, I can't imagine a stronger indicator of small-mindedness.