What may be successful is a filing a lawsuit against Google. A few months ago, a US District Judge granted summary judgment to Google when a South Carolina parent filed a lawsuit under South Carolina state law theory called, "intrusion upon seclusion." The lawsuit was based on her child being tracked and being a victim of Youtube violating COPPA. There were several issues with their claim, no injury was alleged and Google successfully argued that COPPA was under the exclusive enforcement structure of the FTC. The federal judge basically said you can't privately enforce the requirements of COPPA through a civil lawsuit.
A kid content creator that can demonstrate injury (financial loss) due to the inaction of Google to comply with existing federal law despite being repeatedly warned has a strong case. Youtube maintains that the algorithm is viewpoint-neutral; however if the lawsuit can survive long enough, discovery could bring to light a lot of the hidden secrets of how the algorithm works and how it often rewards content creators that knowingly violate COPPA. It is important to remember that the FTC pointed out that content creators are subject to violating COPPA along with Google and they hinted that in the future they may take action against content creators. Summary judgement is a powerful thing and Google has access to the best attorneys out there, but it has a chance. Youtube could be sued for fraud, unfair and deceptive business practices, and breach of contract. It would be an uphill battle for sure, but the next step is to hold Google accountable for ignoring the creators that followed the law and lost views/revenue because of it.