I get that it's a complete time suck. But it's depressing how quickly technology has made plagiarism inexorable. I got plenty of bad grades in my time because I wrote the paper at the last minute. But at least it was my own lousy work. The punishment for plagiarism should be expulsion.
at my school, the paperwork to charge a student officially with plagiarism is tedious and difficult to prove when using AI. And don't bring up early, bad pseudo AI like Turnitin - that's just weak evaluation from a third party instead of the instructor.