Just flag and go, or report directly in email if you feel the account isn't being cleaned up quick enough. There is a good chance such accounts will end up being bots anyways.
It's good that GP posted that. I didn't initially clock that it was AI slop. Their message prompted me to look at the poster profile, which immediately showed this was a bot. That in turn meant I downvoted that message, which increases the signal that it's a bot. The community has something to gain from it. Downvotes are not strong, visible signals. A message it.
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