Casper Schoppen broke all the previous records in puzzle rush (a mode where you get to solve as much puzzles as possible in 5 minutes) by memorizing most of high rated puzzles. After that chess.com decided to add a lot of new ones.
https://www.chess.com/article/view/puzzle-rush-confirmed-rec... https://www.chess.com/news/view/new-puzzle-rush-chess
Although I don't think there were lots of players who tried to use this tactic among all the ones who occasionally train on chess.com.
If you produced fewer, would that increase the proportion with expert review?