Every one of the Leave campaign’s claims was worthless. Every one of their promises was obvious nonsense. And a BMG poll suggests that people are beginning to realise this.
Referenda can look superficially appealing, but by trying to reduce a complex or divisive issue into a simple yes/no question, they can cause confusion and uncertainty. Often, this leads to people voting on the the question they would like to answer rather than the question being asked, which allows the whole process to be hijacked by fringe groups (UKIP turning the Brexit vote into a ballot on immigration, for example).
Low turnouts, as is also often the case, also skew the results away from the balance of public opinion and towards the minority with the most enthusiastic supporters.
There are cases in which a referendum is justified, but these are rare and should be treated as exceptional and they certainly have no place in resolving internal party disputes.