We sailed a few weeks ago, booked premier oct/nov '22 and final payment March '23. We were well aware of the changes early '23 and did think about upgrading to the 'new' package but decided the cost of an odd sundae, medallion accessory etc onboard would be cheaper than the upgrade price so didn't bother.
When we were onboard, we didn't like the look of the sundaes so we didn't have any (the cones on top deck were delicious though), bought 1 accessory for $12, knew we weren't going to any classes 😆 We certainly didn't feel hard done by. I think perhaps your agent didn't explain the packages properly to you, new/old/upgrades or maybe they weren't fully aware.