The Wire... The Sopranos, Six Feet Under, The Office, Red Riding, Underbelly, Life On Mars, Deadwood, Damages, Generation Kill, The Good Wife……. These are not exclusively crime fiction, nor am I necessarily a fan of them all. But what they all share is a high-end, adult approach to subject matter and production, a kind of observational genius and the will to put it to work in the service of good human story-telling. The equivalent SF shows (in terms of profile) seem not only to pursue, but almost to glory in, the exact opposite – an unrepentantly YA-eyed comic-book reading of the world.
There is a lot of disagreement in the discussion which follows but I have to say I agree with him (and of course I would add Mad Men and Breaking Bad to his list, perhaps The Shield). I love SF but the last really good space show I watched was Firefly, and the last good non-mimetic was Life on Mars. Doctor Who is a social and cultural phenomenon, which I love on those terms, but it isn't high class adult drama - it isn't even supposed to be.
We see the same in high-budget films, they can not afford to stick their necks out, and art is by definition 'sticking its neck out'. Or perhaps I should say, every commercial venture can include one risk. Artistic integrity is a risk, and big budget is a risk, and a non-naturalistic premise is a risk. That means a high quality SF show or film is running three risks in one. It is a miracle we ever get any at all.