The Disneyland Adventure game was under way less scrutiny than Disney Infinity though.
Putting a Splash Mountain set piece into the game is one thing, as that has basically become its own thing (although Splash Mountain has an interesting history that I could get in to), but playable characters are something else entirely. In this age of social media and things there would be a huge backlash.
Although I will say that even if some small amount of content ends up in the game, the tar baby is the last thing that they'd include. That didn't even make it into Splash Mountain.