The people? I certainly hope they are. The political class has been effectively non-serious about many, many issues going back well over a decade now. The Brexit fiasco is the latest and worst symptom of a larger problem.
It was these people, or their direct predecessors, that engaged in the fiction that was Austerity, for some reason, despite a mountain of data, and enormous suffering.
It was these people who so cut their defense posture to the bone, they built aircraft carriers whose only fighters to fly off of them until the 2020s are US Marines in their visiting F-35B. And they retired ships, aircraft and vehicles with decades of life left to them shortly after modernization. It is so bad the US has been calling up France and Germany for Security concerns before the UK, for a good 6 or 7 years now. The Special Relationship in 2019 is not the Special Relationship of 2001, largely because the UK kind of shot it in the chest for some reason.
It is these people, or their direct predecessors, that held a Scottish referendum that nearly saw the United Kingdom as we know it break up, in no small part because they didn't take it seriously until the 11th hour, when they were bailed out by an ex-Labour PM / Scot himself.
It is these people who broke NATO unanimity on Syrian airstrikes in response to chemical weapons in 2013 because the government couldn't be assed to count how many commitments to a Yea vote they had before calling the meaningful vote.
I was in the UK late last year for a few days. I've gone nearly at least once a year for the past 10 years on business. I've never seen as much trash in the streets, as many poor people, and frankly, the entire joint looking as run down, as I had then.
Beyond Brexit, they need to fix their shit and figure out how they went from the likes of John Major and Tony Blair, to the likes of David Cameron, Theresa May, Ed Milliband and Jeremy-fucking-Corbyn, and everyone they surround themselves with.
If the UK wants to truly say "fuck it" to the rest of the world and their place in it, and become just a larger Lichtenstein before fading into obscurity, they should just drop the shit and tell the rest of us in the Western world. That way they can hard crash out of everything - the EU, NATO, the Special Relationship, global finance - and we'll just eat the cost once. The world needs a serious UK that is a partner to the US and Europe too much for this nonsense they've been engaged in for years now to continue.
What happens during the next financial crisis? Frankly, at this rate, I'd expect Theresa May and Jeremy Corbyn to find new and terrifying ways to show the world that they're deeply non-serious people.