[throwaway675309]

You are not thinking things through and you're really not defining what it means to "violate someone's right to exist".

What if there is a person who was mentally ill and if they hear the word coconut it could cause them to inflict self harm? Now what happens if I'm talking to that person and I say the magic word coconut? Am I liable in the situation, even if I wasn't aware that this would cause them harm?

Now let's take a more real world example, let's take the word rape. Some people may have had traumatic experiences in the past that can cause just the mention of this word alone to act as a trigger that could lead to negative thoughts and possibly self harm, even suicide. What about now?