If ever there was a meaningless argument it is the present one about the exchange rate. The pound was on a correction cycle that started long before the referendum vote. There has been a valiant attempt to connect the exchange rate directly to the referendum result. It is nonsense.
Someone needs to provide a way of extracting the component of the downward slide due to the referendum result from the previously initiated correction cycle. Until that can be unambiguously constructed
further argument is futile.