I think it's pretty cool. C'mon, when was the last time *any* theme park invested in the little kid demographic? (OK, maybe LegoLand.)
Everybody is chasing the teen/adult segment with inverted/4D/scare-the-pants-offa-ya stuff. Now, Disney no doubt needs to invest there too, but as an upgrade to ToonTown I think its a good long term move.
On the business side, as a dad to two once-little girls, I can assure you, 6 yo girls drive a LOT of revenue and will pay dividends for YEARS.
And it's Fantasyland, people!!! When has there EVER been a thrilling headliner there? Fantasyland has the simplest, shortest rides around. But we all go, right? For nostalgia, for relaxation, or heck, 'cause we've got little kids (or grandkids) with us. Nothing wrong with that.
Enjoy it! If its not for you, move along and be thankful its pulling people out of the lines you want to be in.