No, that is the parks' standard. They are allowed to offer you "reasonable accommodation unless it creates a direct safety risk," meaning they can't go against the ride manufacturer's safety regulations to get you on. But if you can board, and there are no obvious red flags in the eyes of the ride ops, you will ride, and the park will hold you accountable for your own safety.
ADA is basically irrelevant in this case, as I don't believe this ride even has special ADA accommodations. Most rides don't.