Why are we still discussing this?
Because other posters want to discuss it.
Again, it literally says nothing about how or why those babies died.
This is true.
The fact that it was wrong to take the notes home has nothing to do with whether she murdered babies.
Incorrect. Conversely, it's part of the picture of circumstantial evidence the juries were being asked to consider. Criminal trials are strict about what evidence is and is not permissible; in addition, the courts require that this be disclosed from the outset. Had the evidence not been permissible then it would not have been admitted into court.
Yes, we can speculate about why she took those notes home, and that’s all it would be- pure speculation.
Indeed, and it's part of the job of the prosecution to 'suggest'. It's speculation, but in any trial the prosecution/defence will invite juries to infer (or reject) inference on the basis of the evidence they have seen.
Leaving aside any speculation, the facts are that Letby retained these notes knowing full well this was against hospital protocol. She will have been fully trained as to how to deal with sensitive information, and expected to include those instructions in her practice. She did not. This at the very least is a serious breach of GPDR which can leave the institution for which that employee worked susceptible to fines of millions of pounds.
The notes also correlated with babies whose families she'd searched for on the internet and babies who had mysteriously collapsed whilst under her care in the unit.
These are all facts which any prosecution should present and any jury that's awake should consider seriously. They're not just a benign sheaf of documents which somehow ended up in Letby's possession by unhappy chance.
The above bears in mind, also, that this is a tiny part of the body of evidence under consideration.