It's just another example of how CS (Read: Silicon Valley) culture is geared entirely towards the 20 - 30 year old male with no family or time commitments. Willing and able to spend hundreds of hours grinding leetcode and a portfolio of side projects.

Their culture problems that have become publicized of late are a knock on effect of this. It definitely establishes the fundamentals and makes you "better" than the rest (to a point), but at a terrible cost.