According to what I saw on the web, Andreas Rahmatian is an "Austrian-Scottish aphorist". (He has a number of aphorisms listed on Aphorismen.de.)
Mr. Rahmatian mentions as an argument against Scottish independence that Scotland will be a small, unimportant country. Well, what's so bad about that, if that's what a majority of Scots want? And Scotland isn't really that small, if you consider the population of other EU countries. Scotland would come in about the same size as Denmark, Finland and Slovakia, and would be bigger than nine EU countries (Croatia, Cyprus, Estonia, Ireland, Latvia, Lithuania, Slovenia, Luxemburg and Malta). So what's Mr. Rahmatian's point? That 13 of 29 EU countries, assuming an independent Scotland applied and was approved, are unimportant? Is Austria with 8.5 million people or Bulgaria with 7.2 really so much bigger or more important?
I don't think that positive feelings for one's own country or a wish to be self-determining means that one is necessarily xenophobic, as Mr. Rahmatian seems to suggest. If people choose to leave Scotland, should the Scots vote for independence, well, fine. Maybe they'll be replaced by others who welcome the chance to make a contribution to a new country.
I haven't the followed the topic enough to know how things will shake out for the Scots should they vote yes, but then I doubt anyone really knows. Should independence happen, however, I certainly hope the benefits outweigh the negative effects. No matter what happens, though, being able to vote for independence is certainly preferable to having to fight a war to gain the same thing. As an American who happens to have a lot of Scottish and Scotch-Irish ancestors, I wish the Scots well.