The right question isn't "does this organization do crazy things?" but "do the good things outweigh the bad, or the other way around?".
The other thing is that I think a lot of the "EU does crazy things" narrative is deliberately, and dishonestly, pushed by people who are more interested in making the EU look bad than in the truth. (I am not suggesting that sarcasmOrTears is such a person: only that their perception of what the EU does may have been affected by the long-running Make The EU Look Bad campaign.)
That’s what the Magna Carta was about. Also the US revolution.
Magna Carta was about the balance of power between the king and the barons; commoners' interests come into it only incidentally.
The American Revolution is a slightly better case, but note that its "No taxation without representation!" battle-cry wouldn't be any sort of case against the EU because (1) everyone in EU countries does have respresentation, and (2) while for some countries EU membership is a net cost (at least if you ignore the benefits of free trade, free movement, etc.) that cost is a tiny fraction of those countries' total revenue base; e.g., the UK's net contribution is about £8B/year, which is a little over 1% of total UK taxes.
I don’t care how well-meaning or reasonable sounding their laws generally are. They clearly don’t have a clue.
This is a specific instance of a general class of problems that absolutely did inform the Brexit vote.
To take an arbitrary example - increasing the age required to obtain an unrestricted motorcycle license.
On the face of it it's not that significant. No-one really cares about this apart from in the abstract. It reduces death rates, and from that perspective it's a good thing.
But there's some small bit of the population that is now pissed off by this, you've told them "wait until you're older", and they don't like that and vote against you.
(It certainly annoyed me at the time despite already having a full licence and already being above the new cut off. No, not enough to vote Leave. I like my citizenship.).
Now multiply that by lots of issues which affect different people.
How about this - https://www.youtube.com/watch?v=vI3R1HAHJBU ?
You don't consider this kind of crap to be one of the reasons why people voted for Brexit?
I voted for Brexit not because of most of the commonly touted but because of the breathtaking arrogance of the EU leaders. If you followed the series of referenda all around Europe regarding the EU's policies, you will see that in almost every instance the popular vote went against the EU, only for member countries politicians to ignore the peoples votes.
Britain is simply a country whose leaders promised to leave the EU if the public voted against it, and as far as we can see they are committed to honouring that promise.
It was the EUs handling of Jorg Haider's party's election victory that decided Brexit for me, ie about 8 or 9 years before the Brexit vote, and FWIW I am not white. Don't assume that all the reasons usually touted were the cause for the vote for Brexit.