I think we will have to wait and see on this. I don’t think Disney would build something they know is going to fail.Yes, but how often are you on property? For you, spending a day to "check it out" is less of a commitment than a family that's visiting Disney at most once every few years.
It's not just whether the family, or some members of the family, has an interest. It's whether the interest is enough to go here, AND give up what they would otherwise do (an extra theme park day, water park day, resort day, or whatever).
I think this is something people will do if they already set aside time for Disney springs. There are plenty of people who don’t go to Disney springs at all. This isn’t something that’s going to take people away from the theme parks. This is like Cirque or mini golf. It’s another activity.