When everything a person sees says "people who are part of this community are men", it's driving women away from that community. When women visit my hackspace, they tend not to come back once they realise I'm the only other woman there and the culture is reasonably masculine. It sucks to feel like you don't belong.
Ensuring that as many interested people as possible feel like they belong should be something that any subset of society thinks about, especially when publishing materials aimed at a broad audience.
The issue, for the record, isn't a single material. If there wasn't a problem in the first place, there'd be nothing to criticise here, except for it feeling a bit out of place - the fact that not many people feel a bit odd about a marketing material targeted towards "Linux nerds" that only features men is a small piece evidence for said problem.
Ensuring that as many interested people as possible feel like they belong should be something that any subset of society thinks about, especially when publishing materials aimed at a broad audience.
The issue, for the record, isn't a single material. If there wasn't a problem in the first place, there'd be nothing to criticise here, except for it feeling a bit out of place - the fact that not many people feel a bit odd about a marketing material targeted towards "Linux nerds" that only features men is a small piece evidence for said problem.