To those making decent money in YOUTUBE side hustles - you need to see this
 

It's a gold mine... but it can also be a trap for the unwary
Tick the right box!

This is to purge small unprofitable YouTube channels. YouTube could easily set a setting so that your videos aren't set for children under 13. But by choosing to have a setting to block all children (those over 13) you take out a giant section of views.

COPPA actually gives exemptions for content which has mixed audience. So this really is a non issue. Honestly I think most people will wing as the reward far out ways the risk especially if you don't live in the US.