""Young people have less grasp on the history, recent or long standing, and are more likely to favour novelty. Look at the age range imposed by ...............""

You mention the Quebec analogy. Recent surveys indicate young voters there are less interested in separation today, and are mostly interested in economic concerns than independence from Canada. (Things could change, and situations may differ- but, these current indicators in this location suggests that time may lesson, versus strengthen, youth interest in separation).