Quibbling about details aside, this article is important. It's a major defection from within the environmental community. That alone marks a shift in mindset within the environmental activist community. Does anyone think he came up with this stuff by himself, or hasn't discussed this with any of his peers within his social circle? Not likely, and he wouldn't have presented this opinion if he didn't think he had some support.
It's a major shift from thoughtless anti-technology knee-jerk environmentalism towards intelligent application of technology, with the goal of addressing real world problems with real world solutions. Note how he gives props to conventional alternative energy sources such as wind and solar power, while pointing out that they are merely one part of the overall solution. This is VERY important IMHO, and I think we could see some real changes as a result. Most importantly in my opinion, we could see a resurgence in interest in basic engineering education in our universities. Environmental groups reach a broad audience in our colleges and universities, and getting those kids interested in modern energy technologies is going to be important in the near future. The US higher education system has discouraged rocket and nuclear science for at least 2 decades and without some resurgence, we risk falling waaay behind the rest of the world. China, India, and Russia in particular are very pragmatic in their approach to these issues, and their universities press these study areas as desirable while the US has for a long time brushed off advanced energy science and engineering technology as the domain of the baby-killing republican death doctors.
I think it could be very important if we accept the shift in attitude for what it's really worth, and not get caught up in quibbling over the details while discussing science with non-scientists. Take their support and run with it.