"Reached by The Verge, Google confirmed that this new [child friendly labeling] system was the result of a landmark $170 million settlement YouTube reached with the Federal Trade Commission in September for allegedly violating childrenâ€™s privacy. Itâ€™s the largest fine ever collected under the Childrenâ€™s Online Privacy Protection Act (COPPA), which forbids collecting data from children under the age of 13 without explicit consent from their parents.
In this case, the ruling means YouTube canâ€™t employ its powerful ad-targeting system on anyone who might be under the age of 13 â€” a dire problem for a platform with so many young users."
"If the FTC does take action against channel owners, itâ€™s likely to be both selective and heavy-handed. The FTC is a small agency and doesnâ€™t employ nearly enough staffers to tackle every COPPA failure that gets uploaded to YouTube. (Chairman Joe Simons has repeatedly called for more money to address the staff shortage.) With so much content uploaded to YouTube every day, the FTC is likely to focus on high-profile cases against popular channels."
Honestly, you would be fine as your channel would be considered too small to get the noticed by the FTC. By the time your channel is big enough, you should be aware what content would be in violation.
YouTube and the FTC can barely stop people from breaking copyright law and posting copyrighted material on a daily basis.