I used to do that, until I gave up. Modlog shows 31 deleted posts for userID 3618422, and that's just in the last week. He's been on top of most posts in the past 7 days for a while now, he popped up 21 times in my automated keyword spam search and he's accused of using chatbot plagiarism. He's on my ignore list.
Wasting more time on reporting his posts is a tremendous waste of time if it doesn't result in a permanent ban. Which is what he should have received a long time ago.