Well... yes. The rest of it is a bunch of "well, we'd likely have had a bunch of the good ideas we were forced into by EU membership anyway" which is shockingly optimistic when looking at 80s Thatcherite Britain, verging on naive.
Throw in a couple more rather unconnected points that pretend to show significance (while just showing that the less-developed world is growing faster than the developed one. Which is... yeah, obvious, but also expected)
The rest of it then swerves into dodgy anti-immigration territory. Which is odd for a "liberal" case.
I agree with it that the Brexit plan is optimistic - but I think the article demonstrates exactly why that's a bad thing: because it's stupidly optimistic and convinces itself that everything will be perfectly awesome because they want it to be.
Whereas the reality is that this is rarely the case.
It's massive risk for little upside vs no real risk for a slightly reduced short-to-medium upside.
While I'm absolutely not a supporter of the BNP or UKIP in any way, their endorsement of something doesn't automatically make it a bad idea.
If it does, then what does it mean when both the Conservative party, as well as many high level US officials (the President, military generals, intelligence chiefs) all come out in favour of the UK staying in the EU? Does that not ring any alarm bells?
EDIT: note, I am deliberately cherry picking the supporters to make the point. I'm aware they're not the only people in support of staying in the EU. Much like I'm sure the person I'm replying to is aware that the BNP and UKIP aren't the only people in favour of leaving, and has chosen them to make his point.
True, but it does heavily cast a massive amount of doubt upon it. At least adds evidence that a lot of the Pro reasons may be based on... less than sensible ideas.
The "good" reasons so far have been basically shown to be mostly wishful thinking with very little actual upside and a LOT of risk.
Personally I'd not like to play roulette with a country, I'll take slightly slower growth and stability, thanks.
I've yet to hear any pro-exit talking point that isn't xenophobic, jingoistic, or at BEST just hopelessly misinformed economically.
The fact that the BNP and UKIP are solidly behind an exit should be a good indication that it's terrible. They are like a bellwether for awful ideas.