Children and young students, certainly. Adult students: almost 100%. If writing is your job, then by definition, and your problem is more often finding something to say, not writing it.
You’re not counting all the office workers who have to write reports or emails, or all the scammers who write those websites to manipulate SEO or show you ads.
Everyone should think twice about putting their name on AI garbage, or garbage of any kind. But wishing doesn’t stop it from happening, especially when companies are explicitly selling you on doing just that. Remember the Apple Intelligence office ads?