Again, what you are saying if it was intentional and consistent would make perfect sense.
However, as a army vet and someone who works with vets with ptsd, I assure you, it doesn't just go away. Looking at the current version of Obi, unless they plan to add some type of intervention, how can they explain this current version then the version of Obi in Episode IV – A New Hope?? In New Hope he was fully connected to the force.
Also, how could he not know Vader was still alive? In Episode III – Revenge of the Sith, Yoda told Obi that Anikan was no more and that he is now Vader. Everyone in the universe knew/ knows about Vader.
The continuity is all messed up.