You are correct in a sense, but as customers why do we have to lose something to gain something at a time when prices are rising at an unprecedented pace?
Yes, we are not going to run out of entertainment, but there are some shows, even small ones that may appeal to guest more than a full attraction. Having a large amount of options also ensures that a guest is less likely to repeat experiences and can have new experiences, even small ones, with each trip.
In my opinion, it’s the little things like the Sword in the Stone or the muppets that separate Disney from the competition. The small things are the seasoning to a well cooked steak. They add to the “magic.”