I think you've nailed it with the difference of being an editor versus an author.

As you note, using any tool to help translate *one's own writings* into other languages is perfectly acceptable - because one has still performed the original writing.

But to input a few goal points into an LLM and then claiming the output as one's own writing, regardless of how well they have vetted, corrected, added to, or otherwise improved it, they are doing nothing more than copy-editing, not *authoring* the material.

It shows laziness and an evasion of the responsibility of learning/understanding enough about something to be able to explain and defend one's ideas in one's *own* words.

In short, it admits one's lack of understanding and lack of sufficient motivation to gain it.