> Let's address the first reason: malleability. A recent grad presumably will adopt the company's culture faster, complain less, and in general pick up things sooner. Well, the hardest, meanest coworkers I've ever had were late twenties, early thirties. I've worked with people in their sixties, and they're sweet people. Even the grumpy old sysadmin had only a thin layer of spikes. After just a few days I could see through most of it, and he was 10 times more helpful than my other sysadmins. Not only was he softer (at least deep down) but he was smarter, having done it for decades. Even when he met a new problem, his keenly developed taste made him more likely to choose something that would be more maintainable long term.

What if they're right on average, and your experience is the exception rather than the rule?