David, I read it as the exact opposite too.
I found the earnest use of such a flimsy piece of confirmation bias by a Leave supporter so hilarious that I made my ironic post implying that I support Leave and suggesting the OP was in the Remain camp; a reversal of reality. It was joke! (or at...
This is just an unsourced, selective and probably made up survey posted by someone in the Remain camp desperate to show how much worse off we'll be outside the EU.