Dutch people are always so dour and grumpy I generally try to avoid them. For this reason I don't know too many.
He's jealous. No, for real, Frisians can be really annoying since their so proud on their own language and historic stuff. I guess it's the same like with the Scots and the English, or the Welsh and the English maybe.
In this country many do exist. Although it seems like we are a minority now where we used to be the vast majority.