You keep saying “we”, as if yours is the prevailing UK opinion. Not only was Brexit a close vote, people who voted to leave have largely been regretting it.

https://www.economist.com/britain/2024/04/11/why-most-people...

In the aftermath of Brexit I remember reading time and again of people who voted to leave and by doing so screwed up their own business (e.g. florists whose flowers come from abroad). They expressed nothing but regret.

So no, the UK didn’t vote leave because they “hate the unelected, undemocratic, wannabe-communist institutions”, they voted leave because they didn’t understand the big picture and were tricked by unscrupulous politicians making false claims (probably the most famous being that a lot more money would go into the national heath service).