A comment on an answer to this question says:
This question fulfills: Legal terms and language, doctrines and theory, because it asks for the reason why this applies and not the motive of those who created it.
I had understood that any question about why a given law is as it is, why it prohibits or penalizes some acts and not others that might seem logically similar is off-topic for law.se, and belong on the politics stack, or perhaps on history or philosophy. Was I correct, or can such questions come in as "legal terminology" or "legal theory"?
Edit: Note that this includes questions that turn on modern legislative intent, but also questions that are mode historical, such as "Why is the distinction between Murder and manslaughter one of intention (in UK and US law)?" or "Why does the distinction between libel and slander turn on writing?" and many similar possible questions.