The UK got rid of the EU just so the establishment could control the population more.
It's no coincidence that the pending tax evasion laws from the EU coincided with the tories pushing Brexit (using tons of lies, like the NHS bus). Now they have free reign, at least until the next election when labour will probably win.
In a way it was truly about "Taking back control". But not by the population but the big vested interests.
There's also some amount of national politicians laundering unpopular at home legislation through the EU, having it proposed and passed there and then throwing their hands up and saying "See, it's the EU making us do this". The UK's "success" on that front is part of why the anti-EU sentiment there was so high.
Well, the UK got rid of the EC and the UK still works exactly the same.
Our government is a proxy of lobbying agencies, working behind closed doors.
There's a bigger root cause