To make it mandatory that any online company that has a presence in the United States, including both web based and app based that require the user to register for an account to join in order to post, purchase, sale, contribute, or create a membership must require a verification of identity of the user. This will greatly deter fictitious accounts, scam artists, predators, hackers, cyber bullying, minors, and any other nefarious characters.
This can be easily done by having to mimic a pose in a photo and submitting that photo, providing a driver’s license picture or a brief video snippet showing you are the person in the photo, or multi-authenticator feature where a code gets texted and emailed to the user and they provide what the code was.