Due to Lucy in the Sky not being a wholly true and accurate tale — the lead character is named Lucy Cola and not Lisa Nowak, after all – Noah Hawley’s choice to not include a diaper sequence was absolutely his to make. Clearly, some people, however, still had an expectation the scene would be in the new movie, which stars Natalie Portman.
Article source: https://www.cinemablend.com/news/2481266/lucy-in-the-sky-director-defends-cutting-infamous-diaper-incident-after-backlash