Listener, why are you quoting websites.
18 U.S.C. § 1466A (2018)
(a) In General.—Any person who, in a circumstance described in subsection (d), knowingly produces, distributes, receives, or possesses with intent to distribute, a visual depiction of any kind, or attempts or conspires to do so
(b) Additional Offenses.—Any person who, in a circumstance described in subsection (d), knowingly possesses a visual depiction of any kind
Does not say viewing. but it might be presumed that viewing would include possessing. Someone could view without doing those things mentioned above.
(e) Affirmative Defense.—It shall be an affirmative defense to a charge of violating subsection (b) that the defendant—
(1) possessed less than 3 such visual depictions; and
(2) promptly and in good faith, and without retaining or allowing any person, other than a law enforcement agency, to access any such visual depiction—
(A) took reasonable steps to destroy each such visual depiction; or
(B) reported the matter to a law enforcement agency and afforded that agency access to each such visual depiction.