And now you've re-created the "Amazon 1-star ratings left by competitors instead of real buyers" and/or the "false DMCA takedown claims of public domain or original music".

E.g. an honest person creates a "How to sew a mask at home to protect from COVID" which is the real content but a bunch of coronavirus deniers falsely flag that video as "child pornography".

Game theory is hard and everybody has to think through all the future chess moves that adversaries will use.