With AI finishing your sentences, what will happen to your unique voice on the page?

It's a familiar feeling: You start a text message, and your phone's autocomplete function suggests several choices for the next word, ranging from banal to hilarious. "I love…" you, or coffee? Or you're finishing an email, and merely typing the word "Let" prompts your app to suggest "Let me know if you have any questions" in light gray text.