As the game engine keeps on putting me in 1 lvl higher Champions League i don't see why not applaing the strategy to get an easier cup competition..
League and CL are already hard on higher levels.. and yeah, it's not abuse if everyone is able to use it.
It just comes down to how much you know about the game.. believe me, many players got no idea how this works.. even tho they've been playing for 3 years now.