The game is trying to hustle the players. With use of legendary cues you get a variable amount of coins back after a loss. The coins no longer come back to you they go into a piggy bank that you have to pay to break. I earned those legendary cues with hard work and regularly bought season passes to better build my inventory, and now the major kickback out of using a legendary cue is silently removed. This game has been implementing schemes over the years like this to make the user pay more.