Hypo:

Professor: Let's continue our discussion of sub-atomic particles. Top quarks have a number of interesting properties . . . .
Student: Excuse me professor, could you taboo "atomic?"
Professor: Get out.

In this situation, I think it is clear that the professor is right and the student is wrong. It doesn't matter if (a) the student is a quack who objects to atomic theory, or (b) is asking in good faith for more information on atomic theory. (a) is an example of bad faith. (b) is an example of sincere but not worth the effort - mostly because the topic of conversation is sub-atomic particles, not atomic theory.

I'm just having trouble understanding a situation where (1) question is on topic (ie worth answering) (2) asked sincerely, but (3) not worth tabooing a technical term.

In short, deciding the appropriate topic of conversation is difficult, but beyond the scope of the original article.