Could you make the same argument that people voted yes for multiple reasons?
I think it’s difficult to see an outcome where a single referendum would be sufficient to solve all doubt.
Especially with three options, if no option has majority would you stick with original referendum? Or not exit?
In any case, the point of a ranked ballot is you use runoff to reallocate the last place option votes, so you do get a clear majority in the end.
In particular, "reallocate the last place votes" could lead to quickly rejecting an option that is hardly anybody's first choice, yet is everyone's second choice (or preferred fallback if they can't have their first choice). That doesn't seem like a desirable outcome.
And what about the leavers? What justification would be sufficient for them to not call for a 3rd referendum.
I didn’t know that the UK used ranked ballots or how common they are.
My concern is largely that it’s hard for me to understand well given that all of these issues existed before the referendum and are not novel.
If you just default to force something through would violate the rights of those who voted for members who are voting "No" to the deal.