It's easy to lose perspective when you immerse yourself in a culture that celebrates young successful entrepreneurs so much.
The comment referring people in their 30s as "older people" belies a pessimistic and unrealistic outlook that this perspective can sometimes give.
Just because you aren't Zuckerberg by the time you're 22 doesn't mean your life is over.
Thirty is not old. In fact there's no such thing as old, which I would've thought is something this blog is making plain.
There's always something new to learn, always opportunities on the horizon.