Toy manufacturer Hasbro now puts semi-high-end collector's figures in cardboard boxes instead of clear blisters. The pictures on those boxes are inadequate because they don't accurately represent the toy inside. It also allows thieves to swap the figures in the box for cheaper ones and then return the item to the store, duping other customers.
I don't collect toys but I'm in favor of cardboard boxes for the environmental aspect. I assume cardboard is better in that respect than plastic blisters. The issues seem minor to me. You can just buy your stuff online where figure swapping is extremely unlikely, and you will probably see pictures or videos of toys before you buy them anyway. The savings should probably be passed on to the customer with lower prices, but everything's getting more expensive these days so maybe they are indirectly by keeping prices them same.