I know that France French tend to look down on them. I wonder though if there's that same resentment or curiosity that seems to be expressed at them daring to still consider themselves "French" despite having left many years ago. Despite the fact that their paths diverged from the country of origin so long ago that it seems funny to hear their expressions and speech, they did not transfer their identity to the population of English Canada and in many ways were oppressed by them and taken advantage of economically. Many Quebecois would not consider themselves Canadian as a result, which leaves them with no ethnicity/nationality (neither of those words are exactly right) to speak of if they are not French.
Similarly, Salome has expressed annoyance at North Americans who come to Scotland and say they are Scottish or "Scotch". However, while Cape Bretoners may be able to meld into English Canada's culture more easily, they are still very distinctly Scottish. Even if their Gaelic were to be revived however, it would be different than the Gaelic spoken in their country of origin because of when they immigrated. Similarly to what was expressed about the Quebecois, those who came over were mostly very poor people of low social rank. They may celebrate things that the Scottish may consider schlocky or now longer done like Robbie Burns Day or having a yearly highland games. And yes, many people might own a kilt and feel proud to wear it on particular occasions, which by Scottish people who don't do that seems like it's pathetically trying too hard to reconnect. Should they not consider themselves Scottish simply because they have been away for several generations or because their origins were more humble than some modern day Scottish peoples'?