Although he makes some good points -- it can be tricky to hire people with more experience than you, especially in the areas where you're weakest -- the title is pretty awful.

"When to hire 'old people'?" <-- is a ridiculous question.

"Should you take asshat advice?" <-- see Betteridge's Law.

Edit: Depersonalized the target of "asshat" because I'm not in a position to judge the person, just this particular post.