People who work in English but have a different mother tongue might be able to avoid that unsettling feeling.

For me, writing in Spanish is my natural voice and I would not dream of allowing the output of a LLM to replace it. It just would not be me.

However, writing professional communications in English does not feel the same way. Of course, I strive to be clear and polite, and even try to have my own style, but I remain aware that I am playing a particular role in a specific context in a way that does not happen when I am using my mother tongue.