There are idiots everywhere, but that does not mean the general public are blind to the consequences of Brexit. Heck, your hypothetical Cornish fisherman could

There are idiots everywhere, but that does not mean the general public are blind to the consequences of Brexit. Heck, your hypothetical Cornish fisherman could be fully aware of the consequences but still think it was worth it for any number of other reasons (as a sizeable minority of the population obviously still do).