What is more concerning is that I don't think many people who have read widely would consider Paul Graham to be a good writer, and yet people who care about him let him publish this article... He's definitely not a bad writer, and he generally communicates good ideas clearly, which is surely sufficient - and perhaps even appropriate - for his purposes. But he's not a Good Writer.
I've read many (perhaps even most) of his essays and there isn't a single one of them that I can actually remember, let alone any particular line or phrase that stands out. Though surely some of the ideas remain an influence in my general thought.
Conversely, there's plenty of writers who have seared many lines - and entire concepts - into my mind forever. I come back to them endlessly, even without pulling up the actual writing.