Every day there's probably a few thousand morons on the internet clutching their pearls about how you theoretically don't need car insurance in a few states despite the reality that anyone who can afford to opt out is better served by buying insurance and the only people who opt out have very, very, niche use cases. You are using a a similar presentation of the truth but not the whole truth in your comment.
States have widely varying laws. Just because something isn't specifically illegal doesn't mean some existing clause wasn't used to prosecute it. If a state doesn't have a lot of frequency of some event it will likely not develop specific laws, it will just use existing laws and precedents in weird ways. For example CA has all sorts of laws about wells and water in order to mediate disputes. Arkansas for example simply doesn't have those laws because those issues aren't as common and the volume is low enough for those issues to go through different parts of the legal system without causing much problem.
Saying X wasn't illegal in every state until Y year is about as meaningful as saying Z is known to the state of CA to cause cancer for any value of X and Y you could pick.