It depends. Whether a term is sexist depends on intention, as the term itself is ambiguous in meaning. One of the meanings is sexist, another meaning is an oxym

It depends. Whether a term is sexist depends on intention, as the term itself is ambiguous in meaning. One of the meanings is sexist, another meaning is an oxymoronic contraction of words; the kind of language joke hackers are supposed to enjoy. If we attempt to spin things in a positive light, it may be assumed that the intention was to describe the culture in their startup, which involves jokes around such terms as 'brogrammers'. If we attempt to spin things in a negative light, they are obliviously sexist. The truth may be anywhere in between, but the truth doesn't matter: only reception does. And it isn't being received well.