I'm neutral on the note. I have been through trauma as a child. Seeming to invoke censure or criticism or making even small mistakes can trigger profound self-doubt. Plus I blamed myself for everything and felt I must not be a good person to have such bad things happen to me, which was ridiculous, but I truly believed it to be true at the time. Self-loathing was ever present.
In therapy, I was encouraged to write out the things my inner critical voice/extrinsic voices would say and then write another list of a more rational response so:
'I'm so bloody stupid, I can't do this simple task' becomes 'I am struggling with this task, but if I keep practicing I will get better at it'. This was encouraged rather than broad statements like saying 'I am/am not stupid'
I don't keep diaries or notes much anymore (thank god for no longer being young) But at my absolute lowest, when I used to do them, the bad ones resembled a river of haphazard incomplete sentences, and I would ignore the advice to be specific and hyperbole massively.
So I would write nonsense like: I am a shit mother/person (broad statement)
(Missing context: My ex is having a go at me over some trivial mistake with the children's lunch or something)
or: It's my fault and my kids would be better of without me, they're not safe.
(Missing context: DS ran into the road before I could catch him and he narrowly missed being hit by a car)
But say now something did happen with one of my kids, some random accident and my notes were seen with the above statements...it would look pretty damning.
That's not to say LL notes aren't also part of a picture indicative of guilt. I have seen programs where killers or serial rapists write down their thoughts and actions during their crimes. But my mind is open.
It will be interesting to see more in-depth evidence for the prosecution later and how much this evidence will fit in with a built up picture later.