I think ao3 has the best system tbh. You can find anything on there, ANYTHING, disturbing, disgusting, noncon, you name it. But it’s all perfectly labeled and because of that, all that stuff you don’t want to see? You’ll never see it. Only those who go looking will find it. No one gets hurt!

I may be going off on a tangent here...

Nothing will (or arguably should) make art more compelling to people than learning that there's controversy surrounding it.

Read the banned books. View the banned art. Learn about what scares people, and why it's so terrifying to them.