If A, then result would NEVER be realistically contested If B, then result COULD be realistically contested
No one would argue that if the vote were stay, we'd be seeing it again. It wouldn't happen. Not even maybe.
But since the underdog won, since leave won, it is now contestable.
I'm on this fence on this one, and I don't live there, so I don't have a side. But I do see each side's points.
As much as our friends in parliament sometimes make it out to be, it is not purely a match. There is no "underdog" in Brexit; there is one team, the UK, with two options: remain or leave. Choosing a bad option affects everyone equally (except a few career politicians).
With all the shouting and finger pointing it's easy to lose track of this fact: it is not a competition. We're in this together. We're a family, and we might be cutting off the nose to spite the face.
But it has morphed into an us-vs-them issue (brexiteers vs remainers, not even immigrants), and through the lens of competition we only see the finish line.
I mean, your post basically is: Why can't we all just get along.
While it's a noble feeling, the reality is society is fractious, and for complex and nuanced decisions such as brexit there are people who will net-net benefit and people who will net net see detriment. And 'leave option' was the underdog, you might not like to admit it but, the financial and betting markets saw it as such objectively. I'm not sure why you feel the need to try and deny this.