@dahukanna So much this.
It seems pretty clear to me that the unethical behavior didn't start with LLMs. The papers that are getting through tell me that peer review already wasn't happening in many cases. So how many thousands of papers have been published over the past decades where the data have simply been faked, but the papers themselves were written by humans, making them much harder to catch unless without trying to reproduce the results?
There's too much pressure to publish, and no incentive at all to do real peer review, much less reproduce others' results. If we want ethics we need a thorough housecleaning. Starting with shutting down all the closed-access journals.