Again this is just prideful ignorance.
Knowing who Ralph Rangnick is and how excellent a job he's done, and knowing he'll improve United behind the scenes considerably while stabilising them on the pitch does not make me scared. They're still going to be hamstrung by the owners, and we still have Pep Guardiola.
Do you know who sounds scared? The clown trying to convince everyone that one of the most influential and revered people in German football of the last 20 years is "an OAP" because he's swallowed Sky Sports marketing about the Premier League being the only league in the world.