It seems to me that public health concerns are a pretty reasonable line to draw. Flat earthers are weird, but they affect no one outside of themselves (how can

It seems to me that public health concerns are a pretty reasonable line to draw. Flat earthers are weird, but they affect no one outside of themselves (how can anyone act on living on a flat earth?). More generally, effects that have the ability to meaningfully and physically compound among both children and adults seem pretty obvious targets. Ideas that can compound in adults are ok, because they're rational actors under the law, but for example teaching kids to teach other kids pro-anorexia propaganda is not, because it compounds to a public health problem that they never could have consented to deal with.