No, if you observe harm and choose to do nothing you are also held responsible for that action.
If you had intervened, the alleged victim(s) harm and the continuation of such harm may have ceased.
It’s especially damaging if it appears you also made a ‘gain’ from keeping quiet. Such as more money, status and fame, and your priority was self gain and not the morally responsible decision to report what you have seen or raise it with agencies/others.
That is why Holly and others are going to struggle to get past this when it blows up.