I don't get this article at all. It talk about brexit, yet we voted for it despite all the incredible amount of lies being spread about it being a bad thing.
The Leave campaign broke funding rules; took money from the Russians; and ran a campaign that is widely recognised to have contained a range of misinformation from deliberate lies to heavily spun info.
Remain's campaign was only piss-poor.
You may not agree, but it shouldn't be mindblowing that reasonable people hold this view.
As an American you have presumably been affected by eg GDPR and should therefore recognise this is not true.
Leaving the EU means we have removed ourselves from that decision making process. We will still be affected by any decisions they make.
For some reason people read a couple of articles and become experts on really complicated, multi faceted, non deterministic systems and decide to expound their opinions on those around them.