Who's to say those fans who went aren't the old school .. if your club is new and built on recent success the loyals won't be as many.
Liverpool have plastics all over the country from the 80s
They also have sold out season ticket allocations.
Pretty sure most of those going to the games will be ST holders and members who have been to x amount of games.
Nit the plactics that all teams have.
City isn't a new club. They've had a big fan base even during their time back in league 1. Their success is new, which makes it more surprising they can't sell out a semi.