Frankly, I don’t take everything DHH says as gospel, but I do respect him. Rails is a good design overall.
A lot of people, though, hinge on every utterance he makes. His latest post The Immediacy of PHP will surely jarr some of those zealots info a mild state of confusion.
I think it is great that DHH is open minded and pragmatic. PHP is perfect for a lot of tasks. Check my old post on some of the good things other systems can learn from PHP.