Being a non native English speaker this is actually one of the better uses of LLMs for me. When I need to write in “fancier” English I ask LLMs and use it as an initial point (sometimes end up doing heavy modifications sometimes light). I mean this is one of the more logical uses of LLM, it is good at languages (unlike trying to get it to solve math problems).
And I dont agree with the pov that just because you use LLM output to find a good starting point it stops being personal.