I'm not sure what experience anyone in this thread has with grad level research as a student/author, but I can assure you that heads roll over this kind of thing.
A professor's career is built on reputation, and that reputation is as strong as their students' (who do much of the "work" such as it is). It comes down to the professor, but this can be a career-ending moment for those students and I'm quite confident there were some very uncomfortable discussions as a result of this.
It's just a tool.
Writing papers is exhausting, and if the data and results are real, then what's the problem? If the human author checked the output, is that not the same as a human writing the prose?
Everyone in the field will be doing this in a few years anyway. It's a shame that this Salem Witch Trial is happening for the early adopters.
If the findings are being fabricated or the paper isn't being reviewed and corrected by the author, that's a different story. But I'd be shocked if that were the case.