It’s an anecdote so take it with a grain of salt, but I’ve had an experience like this with at least a couple of former colleagues on the higher end of the team’s age distribution — they were great people, but none of the younger team members knew how to relate with them which made day to day interactions a lot more awkward than they would have been otherwise.

Of course, it could be argued that the awkwardness could’ve been avoided had the company started off with a wider age range, but then you run into the issue of attracting older candidates, which can be difficult given the volatility and reduced concrete compensation associated with early stage startups.

If they're out of school and in the workforce, and they don't know how to interact with people older than themselves, that's honestly kind of pathetic.

I guess it would bother me more if we competed in a constrained market but given that development talent, has historically been, is currently and will be in the future a under-supplied market. I tend to look at these entities as just shooting themselves in the foot when it comes to the competition for talent. They are doing more harm to themselves than to the prospects of the rejected candidate.