We’re all adults and we all have agency. Every community is a function of how much you put into it; how much you invest in getting to know others.
It feels like the author expected YC to do all the work of community engagement for him. That’s 100% not what YC is about. Folks like Michael Seibel, Garry Tan, and other partners all respond to emails + engage as much (or as little) as you ask them to.
It's unfortunate the author had an experience that wasn't ideal, but I'd be wary of saying this is representative.