There is a Yiddish saying: "the child that is loved is called by a thousand names"
Within a family, that sort of semantic drift is tolerable.
In public writing, originality has to be bridled by some standard diction or communication is degraded. Its a fine line between being inventively snarky and losing your readers. Never stopped me, of course.
It seems that a pack of rapacious fools calling itself a government is also called by a thousand names. "bush league" seemed clear enough to me when it first occurred to me back in Oct of 2005 so I have used it often. Its obvious enough for others to have thought of it too. Given how few people read my dogged attempts at commentary, others would have to make it up for themselves. Just nice to see the right sort of people using it.