12 attractions in a day is also hard to hit when most WDW parks have less than 10 rides total.I agree with this. In all my visits recently, I realized if I didn’t experience 12 attractions a day, I wasn’t satisfied. I remember it being about 10 a day years ago...maybe it has something to do with amount of things I’ve done so many times now, or maybe subconsciously the money does play a part...but I find 12 being the lucky number for myself to feel like I had a ‘good’ day.
At DHS for example, you'd need to hit every ride once + see Fantasmic! Muppet-Vision and Indiana Jones. Good luck doing that with current crowds, FP+ and the hassle of getting a RotR boarding pass.
This is also why Disney broadens the definition of "attraction" to include things like meet-and-greets, but would you as a paying customer count them?