I don't see what's so snide about 'some greens', the Greens are a political party in Australia, they have a strong anti-nuclear stance as I recall(might be wrong).
Even about a political party - if someone who until just now was a tory MP said "some tories think..." and then went on to dismiss their views I'd make the same point.
Maybe I took it the wrong way, but that's how it read to me. Either way seems like a fairly nonsense article.
You are free to feel offended, but that doesn't mean the author is at fault.
The SMH (and the whole Fairfax group) don't really write articles any more.
Guardian original here: http://www.guardian.co.uk/commentisfree/2011/mar/21/pro-nucl...