TTT - // AH: "I remember dining on a cruise where we were seated with a couple, the man of whom advised me that anyone considering voting to leave the EU was obviously an idiot, and did not deserve a vote." - .....and that is why they lost, they spent all their time calling us idiots and relaying project fear rather than telling us why we should remain. //
Quite possibly.
My point was less about the subject matter than the ill manners of the couple involved, and my willingness to simply say nothing because an argument would be pointless and unpleasant.
Part of the pleasure of dining with strangers is getting to know interesting people - the downside is biting your tongue when some of them are boorish and rude.