I see what you are saying and that "can" be true. However everyone has diverse learning styles.
Some are more visual and others have learning disabilities. I think that ChatGPT is too uniform and if it was fine-tuned towards you personally that would be the best version
What do you mean when you say "personality" finetunes. I am not referring to a replika like feature. I mean something more like a mixture of heypi.com + smarterchild + chatGPT.
In my experience, it just makes it harder to extract useful information.