When Megacorps say "young", they mean "cheap". Cheap is what they want, not yoof. They love cheap. Shareholders love cheap. Cheap boosts short term profits by reducing the wage bill, by far the biggest expense any megacorp faces. If a 64 Python dev would work for the same wages as a 24 year old, the older chap would get the job every time. More euphamisms:
"recent graduate" -> cheap
"free of family commitments who can work long hours" - no, just cheap
"digital native" -> cheap.
On the subject of "digital native", any grad born after '66 has spent their whole career in the Internet age, but lacks a certain skill, ie the ability to work for a very small wage indeed.