I doubt the general public would care whether or not the park was owned Paramount or not. And Disney + Universal are open all year round, so they're going to have a larger attendance. Plus Cedar Fair is not a theme park company, neither was Paramount. So comparing Kings Island to Busch, Disney, and Universal is like comparing apples to oranges.
And generalizing all teens as bad is hypocritical. I've seen adults that are way more immature than teens.