Those people are in the extreme minority.
Yes I think that is true.
I do not rule out them being right, though, in the long term. The EU could fail altogether, and it might even be replaced by something better, that works for more people.
My own father is one who voted this way. He is an enormously intelligent man, more so than me, and he did not vote out of his own self-interest, nor because of any immigration issue. He voted because he thinks the EU had time to prove itself and failed, and because he thinks the country can do better as a more self contained and more focused unit. He can see how the EU has failed in important ways and he sees its collapse as inevitable as it will not adjust quickly enough to the predominant and growing sentiment against it.
For now at least, I do not agree with him. I think it is too much of a risk and frankly we lack a party that can rule the country in such a way as to reap the rewards and progress in the right way. I also think there is a fair chance the EU will continue and ride out the current storm, emerging stronger and more united with a slightly diminished group. But I am not certain at all.
In the mean time, my brother is looking to move to Ireland!