They also focus on age being the problem with “grey beard” rather than the implication that all senior engineers are men. I’ve always been turned off by the term not because it singles out age as a proxy for experience, because they’re literally proxies for each other. You don’t have 30 years of experience without aging 20 years. But not everyone with 30 years of experience can grow a beard or has a penis. Given the gender issues in technology, which are so obvious in the statistics over time, I genuinely think language like this calcifies the gender divide.