Not entirely sure what's being claimed here. That those protesting the lunacy are "nationalists"? You could call them republicans, or, more accurately, adherents of reason and normalcy. But nationalists? Presumably the implication being that those in favour of Scottish independence are loudest here. Surely the only nationalism on display is from the overt, bombastic, Union flag-flying , royal-loving mental cases.
or maybe I've misread the intention of the quoted post.