In a corporate environment you do have an investigation department that enforces such language. However, my point is that in a totalitarian environment people treated you as a pariah for non conforming, as they would not want to face a similar fate. This is a similarity to the taboo of advocating against such an ideology.

about the examples, if you would take extreme slurs against minorities, these are not used in a professional environment already so they are never these that are discussed

The words that are discussed are such that are established for a different connotation. that connotation is completely metaphorical and does not carry any real insult, yet some insist on literalizing those, or finding hidden meanings