So why describe him as a "greybeard" then? It are you claiming to have met many younger and/or female 'greybeards'?
If your answer is that 'it's just part of the story'. Well that's precisely the complaint.
If your answer is that 'it's just part of the story'. Well that's precisely the complaint.
It simply means someone experienced/being at something for a long time. The greybeards at a company can be all women of the age 26, but if they been with the company for 5 years when the company got started 5 years ago, they are the greybeards of that company.
Might as well say "veteran" or "old-timer", although "old-timer" would imply actual old age, "veteran" implies nothing like that.
Greybeards is an inclusive term and it's a well known term.