I think it's situational for mine, 3 and 1.
Both ride ponies, to fast, go on tractors, older can drive a quad, with supervision. Ride bikes, older one lambed a sheep today, tough in one view. Have sat through a ten day power cuts its huge destruction, snow storms, flooding
Put them in a room with strangers, for example a party, or a supermarket, crying clinging screaming. In little ones case. Won't speak and will cry if spoken to in older one case.
They have spent their little life's completely with me, and that absolutely shows. Saying that my eldest has skipped happily to a tiny village nursery, and is thriving.
So yes, in some situations they are extremely sensitive, but in others they are very practical.