I think it's good that these catch up mechanics allow people to join entry level raiding at the minimum, while also helping higher end players manage their alts. It benefits both parties and also gives people more choice over what tier they want to focus on. Now you have the choice to skip a raid and join the players in the current season, potentially rising up the ranks.
I like that, because it rewards multiple ways to play the game while also lowering the base initiation hurdle for players who would be otherwise intimidated by a linear progression.