I knew a lot of people my "age" who would frequently talk about being born in the wrong generation, but it amounted to not liking today's music or fashion. Which is perfectly fair, I agree with them- but today's styles of music and fashion trends aren't going to appeal to everyone, not even for today's "youth", even if the bulk majority enjoy it or are fine with it. It's certainly normal to prefer something from an era long-gone. Outsiders have always existed in society. I think it is also common for many children to feel more comfortable and understood when talking to adults rather than children their own age, and those children will likely grow up feeling like outsiders too, and many things could contribute to this- from childhood trauma, being on the autism spectrum, or simply having an unusual upbringing. Astrological aspects could surely contribute to it, too.
But I think it becomes strange when you routinely forget that the USSR no longer exists, that Hong Kong is no longer a British colony, and that the WTC towers went down during your "lifetime", even when you're well-versed in world events and history! I'm not "shocked" when I find these things out, it feels more like continuously forgetting an acquaintance's name and having to correct yourself over and over. But your "peers" have no trouble remembering, because it's the only reality they know. Though I wouldn't say I've been "born in the wrong generation". I'm alive again as a different person in a new generation, I'm supposed to be here, but it feels foreign and strange and hard to get used to; this isn't my true "generation of origin". I can get along well with people from any generation, but I admit there's a stronger feeling of kinship I feel with boomers and early Gen Xers than, say, generations older or younger than that. Doesn't make me any smarter than anyone...just means it feels more natural for me to listen to cassettes than use online music streaming services.
Young souls and old souls can be found anywhere and everywhere, inhabiting all parts of the world and in bodies of varying ages...you will be able to tell the difference, because one will try to listen, learn, understand, and observe- and the other will simply talk over you, act before thinking, routinely make the same mistakes, and fail to understand consequences. There are many young souls in powerful positions in society, and they may cause many problems for others, and there are many old souls who have their wisdom ignored, because they are poor, or not in an influential position.