Despite the fact that poker is a game of skill, combinations do not always play a big role in it. An effective bluff with a weak hand attracts a lot of attention and admiration of opponents. But revealing such a bluff looks even more impressive.
A call that reveals a workshop bluff even received a separate name - hero call. See incredible heroic calls: professional calls from Maria Lampropoulos, million dollar call from Victor Bloom, best call according to Douglas Polk and heroic call "by mistake".