On the contrary, a wave swinger is about one of the worst attractions for people with vestibular conditions (which includes things like vertigo) - the full 360 spin, combined with a rhythmic oscillating up and down means its very difficult for them to stabilise while on the ride.
Suffice to say the GY page did not change its tune due to favors from the park. The guy who runs it had a falling out with the others who were part of the "founding team", and the loss of those folk resulted in the bias you see today. (It's fair to say the bias probably led to the favourable relationship they have with the park now, but it was not the cause of it)
There is nothing wrong with them being supportive of the park - there are lots of fan pages out there that like to promote their chosen park and to completely ignore any of their faults (TBH, the MW fan pages are probably a lot worse when it comes to can-do-no-wrong blind adoration) - but I do think its a bit rich to stick with the 'golden years' name when that was intended to be the contrast between 'then' and 'now' - and the whole 'past, present, future' tagline is at complete odds with the 'golden years' name.
Interestingly - I thought you said you didn't use facebook?