I firmly believe lots of people voted leave because of immigration, lots of the same people saying it was about democracy were happy for Theresa May to use the royal prerogative rather than have parliament vote on the Brexit bill, the language used to describe the judges etc.
Furthermore, control of immigration wasn't a legtimate reason at all, because those demanding control of it blame immigration for things that it isn't responsible for, and give these as reasons for wanting control.
However the democracy and sovereignty, as well as Greece gave some leave voters a cover story for what they actually didn't want to admit to, that it was their prejudices toward immigration that was driving their vote.
I've heard the "will of the people" in real life, seen it on here, seen it in other places used to defend all sorts of things from leaving the single market to cutting immigration to 50,000 a year etc. Yet surely not all leavers voted for this? So the hive mind is convinient when it suits, but not when it doesn't is what I'm saying.
I also never said ALL leave voters, I said leave voters who used Greece as a reason for wanting to leave.