Goodhart's law on citation count... Too easy to game. It seems many people do this, and it works for them, because even if their peers just know who is doing it, they're still making bank, see Didier Raoult's paper mill.
See also: The Retraction Watch Leaderboard. Who has the most retractions?
Not in dollars, no, but a surprisingly large number of tenure decisions boil down to "does this researcher have a lot of citations to their work?" as a measure of the quality of their research.
See also: The Retraction Watch Leaderboard. Who has the most retractions?
https://retractionwatch.com/the-retraction-watch-leaderboard...