I have no idea if the people in that particular little village are unusually fair as I don't remember ever going there.
I can tell you, however, that there's a very large community of Portuguese=Americans near me, virtually all of whom are from Braga and Porto, whom I happen to know quite well because more than a few of them have worked for me, including a young woman whom I hired "fresh off the boat", as it were.
We became quite close to her, and through her to the community. My son was ring bearer at her wedding, and I've been to many, many affairs at the Portuguese Community Center. (great food by the way)
They're very honest, hard-working people who are faring quite well here. They are not by any stretch of the imagination Norwegian looking, however. In fact, they're quite the shortest, darkest Europeans I've ever met. Nor is there anything wrong with that in my book, for what it's worth, but it's the reality.
I've also recently been hosted at the second home she's bought in the Porto area, and while there's certainly a few fairer types in the area it is
by no means some Norwegian outpost in terms of phenotype.
In terms of the frequency of certain yDna lineages, the studies are the studies. That's all we have. Someone's
feeling that the number
must be higher doesn't have any probative value.
You also seem to be unaware that the y lineage can be extremely uninformative as far as autosomal make-up (and phenotype) is concerned. An elite migration of men can spread their y chromosome around, and it can drift to high frequency in some villages or towns, but in less than two hundred years there could no longer be any autosomal material left in their descendants.