Net, Six Flags Whatever-the-heck-it's-name-is -these-days may be a better value, but if people go and have an unpleasant time, due to inordinate numbers of rides being down, or due to rude employees, whatever...why would they go back? When I want to have a hamburger I always go to the Melrose Diner here in Chicago. There's a McDonald's five blocks closer to my house, and McDonald's hamburgers, being about 8 dollars cheaper, are a far better value. But I'm willing to pay the difference for what I get.
I understand your point that a family on a tight budget may choose Six Flags Let's-draw-another-name-out-of-the-hat because it's cheaper, but I think you mischaracterize Cedar Point as a teens only destination. CP offers Camp Snoopy, the Petting Farm, various kids ride... in addition CP offers a good number of attractions for the whole family--the train, Thunder Canyon, Space Spiral...
I went to Six Flags Ohio last year. I will not be going to Six Flags New-name-every-year this year, despite that excellent value, in part because when we went last year, the very first employees we met--the ones processing season passes, in May-- were rude, with one exception. The second group of Six Flags employees we met--at the turnstiles, weren't bothering to check tickets or passes and just letting everyone in. Many of the employees we had cause to interact with were less than polite, and I won't support that with my dollars. If that is the kind of experience SF is giving, I don't think many families will want to go there, no matter how excellent a value it may be.
And anyways, if this family of yours is on so tight a budget, why are they even buying season passes? There are a lot of cheaper alternatives out there than amusement parks.