This is a difficult topic because there is a fine line between encouraging a child to ride and forcing a child to ride.
My oldest son loves most thrill rides (ToT and EE are his favorite rides at WDW, and he tolerated Dinosaur - which he got on willingly, but I don't really think he necessarily enjoyed or would choose to ride again), but he still hasn't mustered up the courage to ride HM, which kind of cracks me up because it isn't even scary (IMO), but my son just does not like the idea of ghosts! On our 1st and 2nd trip to WDW, after viewing HM on
YouTube, my son swore he wanted to try HM - even exclaimed how much he just KNEW he would love it. But once we entered the "stretching room"? That was it for him - he freaked out, and we had to leave. I was pretty bummed, but I knew that forcing him on the ride just wouldn't be right because he was genuinely scared.
My younger son is afraid on MANY rides. Our 2nd trip to WDW pretty much ruined him because I took him on PotC and he freaked out. He wasn't even acting afraid when we got on the ride, but he FREAKED in the middle of it - later I discovered it was the teeny little drop that did him in! But before I realized that was the cause (he was 3 at the time and had a lot of trouble communicating verbally - still does, for that matter, which is why he's in a special preschool program, but anyway), he refused to go on ANY ride that had a boat - Jungle Cruise, the Mexico ride, even IASW. Well, I kind of lost my cool with IASW and MADE him ride it. Others may have viewed this as borderline abusive because he was crying quite loudly and I refused to exit the ride. But at this point I did know it was the drop that scared him, and I kept telling him that the ride didn't go "down" at all. Within seconds of the ride starting, he was enthralled with the music and the dolls. And now, as long as he knows a ride won't go "down", he is willing to try it. In this situation, I think I did the right thing as his mom. But it could have backfired on me, and in hindsight, I'm wondering if maybe I shouldn't have forced him - I had just reached that "point" where my frustration level exceeded my common sense - not my finest mom moment.
On the opposite end of the spectrum is my stepfather forcing me to ride the Enterprise at Dorney Park when i was about 11 or so. He was ridiculously annoyed that I refused to go on any thrill rides after he had paid "good money to bring the kids to the park, dang it!!" Forget the fact that I was happy as a clam in the attached water park - I just wasn't getting him his money's worth, apparently. So, he forced me on the ride, and I sobbed the whole time, and to this day that is my most vivid memory of that park. Which is just sad, really. Now, please keep in mind that my stepfather was actually an abusive man - never really to me (unless you count forcing me on that ride!), perhaps because I wasn't his child, but to my stepbrother? It was pretty bad, and I can't tell you how I wish someone had intervened.
So it's when I hear people on this board saying it's their "right" to parent their child any way they see fit, that's when I become concerned. Because yes, as a parent, we have the right to follow our own chosen parenting styles. But where do we draw the line between "our rights as parents" and "our children's rights as human beings"? In my opinion, the story the OP posted is an example of infringing on a child's right as a person, and borderline abuse. I know there are many here who would disagree with me - I guess I would just hope you would put yourself in your child's shoes when deciding whether what you are doing is infringing on their rights. I don't think that is too much to ask. Everyone has the right to enjoy their vacation, that's all I am saying.