alt Hacker NewsThe distinctiveness of LLM language comes from overuse of specific words, not because it has a particularly sophisticated vocabulary. Some of the words it overuses may be considered sophisticated by some people, but that's not what makes it identifiable (or what makes it grating). It's still not hard to distinguish your voice from LLMs by being thoughtful about style at all.
(Edit: corrected (unintentional) typo)
It's not just [thing], it's [more dramatic thing.]
You can customise the default style over an impressive range. Most people don't, so most AI writing is distilled essence of Failed LinkedIn Marketer, even when that style conflicts hilariously with the content.