The original statement that it doesn't matter whether you believe in Man made Climate Change because enough policy is being set on the back of that belief system is the only verifiable statement in this piece, the rest is opinion and speculation. The evidence is not, repeat not, very clear. It doesn't matter how strongly you assert it, or how much pressure is brought to declare the science settled, this is now politics not science. There is a theory of AGW, there are facts that appear to support it and facts that appear to contradict it - including the fact that none of the models appear to have successfully predicted anything over the last 18 years, but that doesn't matter because policy makers 'believe'.
I happen to believe that QE is ridiculous, but policy makers continue to apply it. Same with AGW, I don't believe the opinions stated as truths (and distrust the near religious fervour) but to the extent that the lobbyists, crony capitalists, Big Green and others have hikjacked the debate to turn on a pipeleine of government subsidies I realise I am equally foolish to ignore the march of policy. As such I would sell stocks that will be penalised by government fiat, but I will buy a cheap Manahattan apartment from anyone that wants to sell on the speculative basis that the island will be under water.

I think in 100 years time we will regard as laughable the false precision of climate models and indeed measurement. In terms of sea levels we are observing millimetre increases and extrapolating when we can't even be sure if the sea is rising or the land is falling - a key measuring station is in Hong Kong for instance on reclaimed land! Equally the notion that we can measure the average temperature of the earth to a precision which does not even cover the average temperature within a single sitting room is ridiculous. A single measuring station covering millions of square miles of south America is responsible for a major proportion of 'measured' temperature increase for example. And how do we compare that over any meaningful period of time?