Just one person on the leave side said something along the lines of "we could become a smaller, yes, but more innovative and modernising economy" yet that was the best argument to leave. He isn't even in government.

For all those saying the Valley's have been let down and needs control back, only the EU has consistently supported your area.
For those saying democracy has won, has Boris/Gove/Patel ever voiced support of opening up democracy apart from attacks on the EU?
For those saying it's about immigration, freedom of movement is such a small price to pay next to what we'll swallow in negotiations with China and India without the power of the EU behind us.

There were arguments to leave but not voiced by its main supporters and this is instead largely in reaction to the politics of those championing it loudest.