And, for thou wast a spirit too delicateTo act her earthy and abhorr'd commands,Refusing her grand hests, she did confine thee,
While there is some belief among the audience that Ariel admires Prospero, it seems to be that their compliance is in response to fearing repeating past mistakes and being locked up for resisting their new master. The idea that Ariel is scared of rejecting a request by their master makes every action they perform in this play more uncomfortable, as we don't actually know how they morally feel about these actions.