Result not significant
Any organisation that does have a codified constitution has clauses in it about how to change it, typically requiring a 2/3 majority. In the US some large proportion of states have to ratify it. The first Scottish devolution referendum was in favour but not by a large enough turnout. Tory trades union law puts up hurdles for strike ballots. Yes, in an election, some> candidate has to win, even if by 50.0001%. When the issue is to create economic chaos, as we are already seeing, 52% is nowhere near a big enough mandate.