He's not defending it.
Here's the only correct answer to the Designists:
7. Yes, there are problems with the Darwinian model. But those problems are questions. "Intelligent design" is an answer, and you have no evidence at all for that.
But he's also saying the "Darwinists" are wrong, too. It cannot be assumed that all questions about evolution can be answered by the strict Darwinian model - that's as bad as what the Designists are doing.
So I don't think he's defending ID at all, rather, he's calling out what he sees as unscientific claims by both sides.