I get what you are saying, but the Boardwalk is under utilized right now. Nobody is saying it should compete with Disney Springs, but it has the potential to be more than it is. Yes, there's a hotel there, but it's also an entertainment area. It was never intended that the restaurants and other entertainment were exclusively for resort guests. Disney has advertised the Boardwalk as a separate entertainment area since it opened.
They have street performers, midway type games and other entertainment but not every night and some things close seasonally. Atlantic Dance Hall is often closed or used for private events. Jelly rolls still seems to do well. There is also the mini-golf course nearby. There is a lot of stuff to do, but it's not that easy to get to for most people staying on property. This will help with that. There's also some good restaurants at BC/YC and Swan/Dolphin that will benefit from the system.