Jack may or may not be mentally ill. She certainly appears yo be lacking in empathy, desperate for attention, and have a very poor relationship with the truth much of the time.
She also spins everything to suit her own agenda, accepts money from very vulnerable people (many of whom have told her their circumstances, so she does know) and is supported on Patreon by people to whom she has promised various things which she hasn't delivered, and yet ignores requests for refunds.
What is distasteful is that a thread such as this has come to be written - if she were honest, and fulfilled her obligations then it wouldn't exist.
You say If you think her recipes are shit, just don't buy her cookery books. No one is forced to buy them, it's hardly a con. This all smacks of bullying a little tbh.
I don't buy her cookery books - I had the first one and spent money I could ill-afford on the book and the ingredients for rubbish meals which were quite literally inedible. Even the dog we had then wouldn't eat them, and he would eat his own excitement if he got the chance. Iy is a "con" because people are led to believe that these are good, delicious, nutritious meals - and they aren't.
If you think this thread is "distasteful", why not follow your own advice and just don't read it? It's very clear that whatever her personal circumstances she has taken advantage of a lot of people - and she is something of a bully herself. She has said some dreadful things to people who have even disagreed with her, and has caused horrific pile-ons on people she thinks have criticised her.
Does having "poor mental health" mean she should be allowed to do as she likes and continue to take money for nothing? Of course it doesn't! She is responsible for everything going wrong for herself. She has had opportunities that many others would give their eye teeth for and thrown them away. She has no-one to blame but herself.
I feel sorry for her, because she is obviously a very unhappy person, but frankly, she will never be happy because nothing will be enough for her.
And I feel sorry for her for the people she's taken advantage of more.