So the evidence that contradicts your assertions, is bourgeois?
And as for the point about concern for Welsh ex-patriates:
It's a practical reality - if they live in another country, then 99% of the time they will be governed by that country. I they reside in Wales, they will be governed by Wales. If you moved to spain tomorrow, how much government, administaration etc would you get from the UK? Very little, even if you are still a UK citizen. It is not "a narrow parochial nationalism", so stop trying to twist my words.
As much as slag nationalism and capitalism off, what is the alternative?
Capitalism has many faults, but it is much preferable to the repressive, brutal regimes that inevitably accompany communist governments. despite its idealistic appeal communism never works in reality. Your utopia, would be the vast majorities nightmarish dystopia, which is why your political ideology is supported by a tiny minority.