How Mirrors Could Solve our Energy Problem

I notice immediately the passion I feel always too for this technique. You don't need rare materials from other countries. Further it seems robust and easy to repair and recycle. And finally the possibility to have molten salts or here special sand as storage medium. Of course you need open skies for this. I didn't like the first plant because it looked way too complex and "macho". That could be because of the huge power output they aim for. But intuitively it looks like this technique has a optimal balance between scale, efficiency,costs of running and maintenance and here they could be overshooting that optimum. Since the concentrated solar beams are less hot than with tower beams, it's possible a bird survives a short contact (but how??)
 I don't understand the problems with Ivanpah. Michael Moore jumped on it sadly and I start to think "some people wanted problems already during the design" although I'am against conspiracy thinking;