Personally I feel like this is more of a bandage to the problem that there's so many cards in the game that just having a cards page display all cards isn't really viable anymore especially when there's no ways to filter it at all and you can only just search the name of the card which even then there's like 10 cards of some idols.
I don't know how viable it is to add a way to filter or hide sections of the cards page but as long as people keep playing the game and the cards page stays the way it is then any actions on the pages is just going to keep getting longer and longer.
I don't know how viable it is to add a way to filter or hide sections of the cards page but as long as people keep playing the game and the cards page stays the way it is then any actions on the pages is just going to keep getting longer and longer.