That is why you don't put it in the hands of retailers before backers. That is CGL choice to do that or to wait to give them the product till they ship the kickstarter. Sorry BT CGL is the one at fault for making that decision. CGL and CGL alone.
Let me explain how distribution works in the real world. Warehouses cost money. The vast majority of companies cannot afford to maintain their own warehouses, so they rent space as needed, such as when a big production run arrives from overseas. The goal is to minimize the amount of money spent on overhead like warehousing, so you want to move your product from the warehouse to the distributors (who *do* own their own warehouses) as fast as possible.
Amazon is a special case. They are a retailer, but they are also huge enough to be their own distribution network. Infamously so, if you've ever seen any news about them. So as soon as you can, you want to ship to them. They're usually great about street dates, especially when it comes to toys, since so many are released in the Christmas season. (Whatever this year's Hot New Toy is, it's already in Amazon's warehouses.) There is no point to *not* shipping to them early, except in the handful of cases where something slips through the system and gets listed ahead of time. A CGL product just happened to pull the short straw this time.
It's no big deal. It just seems like a huge problem to people who are paying too much attention to all this.