Sorry, I just don't understand the constant posts about "Is this attraction scary" or "Is that attraction scary". What is scary to you? Are you scared of heights? Are you scared of dark enclosed places? I mean those kind of things have a basis in psychological disorders and a lot of people deal with small amounts of that type of thing.
But just saying "Is it scary"? As a grown up, we all know the ride leaves the load area and comes back a few minutes later. Unless you're at at old park where maintenance isn't done, and you are genuinely afraid for your life when you ride a coaster, how can you answer a generic question like "Is it scary"? Yes, the occasional problem happens, like with BTMRR or something. Is that the basis for these type of questions? I mean is there a genuine fear for your life that is bothering someone when they ask "Is it scary"?
I think it's valid to ask of Universal's Haunted Houses, "How scary is this house?" because the whole point of the attraction is to scare you. You may want to expand on that, like "I don't like guys with chainsaws jumping out at me. Will this scare me?". But attractions that Disney makes don't lend themselves to "Is this scary". Except maybe Alien Encounter because the point of that is/was to scare you specifically.
IMO, if you have a particular qualm, you'd be better off addressing that specifically then asking something general like "Is it scary". It's like asking "Will XXX scare my kids?" - unless you provide a little more info, it's anyone's guess.