WHM will never stance dance in FcOB until like maybe i155ish when its farmable the damage is to consistent and the cleve needs to be timed. Even a coiling WHM won't stance dance if 1:their isn't a bard in the party 2:they aren't knowledgeable in the fight. I SCH and stance dancing is a thing I see more fighting of us because a high end Eos does heals as a regular i110 WHM SCH cure/physick would do so it helps.

SCH does majority of the stance dancing
WHM heals, in 4 man raids then yeah alot of people expect you to spam holy to speed up the process