Bass acknowledged “the day to day behaviors of the leader may be relatively unimportant to the supervisor-subordinate relationship compared to the leader’s behavior when a subordinate experiences an intense demand or when a leader experiences a highly unexpected response” (Bass, 1990, p.49).
I think this aligns with leaders leading by doing. If the intense demand of the subordinate is met with the supervisor helping, that relationship is going to be positive rather than the supervisor feeling doing the work is beneath them fostering anger and resentment for the leader.