Earlier quoted context omitted.
There's no need for convoluted explanations. A good taboo, understood as a restriction on certain kinds of behavior or speech at least in certain circumstances, exists to protect some good. It's the same reason (or one of the reasons) we partition our houses into rooms by purpose. Human flourishing requires certain limits, not letting it all hang out. The latter is more akin to the liberal notion of freedom understoo…
> There's no need for convoluted explanations. I don't see how it's at all convoluted. If anything, it's too reductive. Taboos, traditions, etc., don't need to exist because of a reason that's explicit. Sometimes, they do, but that doesn't explain the taboos that don't make obvious sense. A taboo can be more or less a form of "cultural neuron" that doesn't have an explicit purpose but incidentally changes the balance…
And on the word shit, there is a long tradition in various world cultures of curse words being named on bodily functions. But you are missing the obvious in that "curse" words are such because they were originally thought to bring a curse on the speaker or recipients from whatever god-entity they believe in. I suspect this is a manifestation of (ancient?) society's methods of trying to control the fuck out of everyone and it is a meme burned in our consciousness quite deeply at this point. But all that makes the entire notion of curse-words invalid; if their meaning is that which we attribute to them then they are meaningless and therefore harmless. But with morality unable to escape the shadow of primitive, ignorant times, they continue to be "taboo"