For those of us outside the UK that makes sense. The UK acts as if it's still master of its 19th C. Empire when for much of the world it's falling further into irrelevancy.
Only when its citizens realize this and ditch all the supercilious rules and nonsense that's gripped the country for decades will it recover and join the world again.
Unfortunately, Britain exceptionalism is alive and well. The sun never sets on the British Empire, we won WWII etc. Lots of nostalgia for a perfect Britain that never was. The result: jingosim and Brexit.
I say that as one who currently owns a UK passport.