There have been complaints about the SAT for how easy a test it is to game (get an SAT specific tutor who teaches you how to ace the test while not needing you to learn anything of actual value) for ages. No idea about the LSAT or the GRE though. Ultimately it’s a question of if you’re trying to test for pure problem solving ability, or someones willingness to spend ages studying the format of a specific test (with problem solving ability letting you shortcut some of the studying).