Point of view may be overt and explicit, or it may be subtly implied. It is often used to create character by presenting recognisable opinions. It may also be used to present psychology in depth by revealing unconscious thoughts. Information may often be presented from a particular point of view without revealing the source - which the observer is invited to guess. It may also be mischevously imitated for ironic effect.
Point of view is more than just an 'opinion'.
It also implies an identifiable source.