I completely disagree. It is a lot more absurd. Language is not a priori. It must be learned. It requires both a speaker and a listener. Both must understand the meaning of the spoken word as well as other factors of communication, including tone and body language, in order to interpret and understand the communicated meaning.
The idea behind a "bad word" is that the word is offensive no matter what. It doesn't matter what the dictionary definition of the word is, or the intended meaning of the word or the subject of the sentence that employed the word. The word is intrinsically "just bad" according to this religious belief.
Objectively, sometimes there are polite ways to use a "four letter" word such as "fuck." The preceding sentence is one such example. But ... if you hold the irrational view that I am describing, there is no such thing. It is ALWAYS "bad." This is a faith based belief system. There is no grounding for such a position. Under such a position, even an academic discussion of the word would require it be censored for fear of offending someone.