Don't forget that about half of the Brits want to leave. And A considerable part of them don't even care if the country is thrown under the bus by doing so.
I am not so sure about that. There's still a lot of misunderstanding about what "no deal" means.
A surprising number of people seem still to think it means things stay the same, which is quite understandable in many ways. After all, if I go to a car showroom and say, "I want to trade in my old car and buy a new one" but after they've shown me what's available and we've argued about prices and trade in terms, then I say, Sorry, but I don't like what you're offering me," I walk away with no deal, and I've still got my old car and whatever I was planning to spend on the new one.
I might not like the old car, but at least I still have a means of transport.
So a lot of people, I think, when they say they want "no deal" really mean they're sick and tired of the whole business and just want to forget about it.