MSNBC is stupid.
Anyone that's upset over Romney's quote is probably offended by the scientific method ... which is always changing theories when new facts come to light.
Some people are just .....
I haven't seen anyone offended by the substance of what was said, just one group mocking him for the misattribution and (possible) Keynesian connection, and another group who thinks that quoting Keynes (even unwittingly or not at all) makes one a socialist.
And though I never thought I'd be defending MSNBC, they are actually careful about attributing the quotation to Keynes, and quote and cite that WSJ MarketBeat page to which you linked.