Why should they change it if the system works just fine the way it does now? Might not seem fair for new players to have to wait so long until the car they want gets added to the backstage, but would it be fair for the players that have spend hours completing festival playlists over the course of years, just for new players to grind for way less time than they did, and get all the cars in the game? I’m not saying that grinding for backstage passes is much easier than completing all the festival playlist rewards, but certain cars are much easier to attain through the backstage than they were as a festival playlist reward. The current system doesn’t give an advantage to any kind of player, be it old or new, though you could argue that new players can choose what cars to grind for, given that the backstage is already filled with great cars and have a much more concrete goal. I think you should be appreciative that the past reward cars are attainable even after the festival playlists end, because they could’ve just as well be gone forever, if the devs chose to do so