The way the system is set up, YouTube's current Safety and Abuse reporting process requires that a reporter provide an example of abuse in a public comment or posted video. Third-party testimonials won't work. If you try to draft a narrative within the notes, the reporting system won't let you. Users cannot submit a report without citing an example from one of the aforementioned categories.
With no way for his victims to file a report on YouTube, the man has created multiple accounts and continued to run his scam on young girls.