I haven't feel any of that among the companies I've contacted. I've been pretty selective about whom I've contacted, so there may be some selection bias there. But my choice has always been based on product/position fit, not on employee age. And HN has by far been the best source for things I'm interested in.

I'll admit I often consciously choose to wear my XKCD hoodie when I meet people for the first time. Not that I don't wear it a lot anyway, but ...

I kind of feel like Steve was sort of an existence proof that age no longer represents the cultural divide it might have at another time.