No schitzophrenia in the latest experimental version?

You are correct, although it wasn’t replaced by it, but renamed to that.
The reason can be found in the pull request that made the change:

The simple answer is: It didn’t depict schizophrenia “real” enough.
There’s to hope that - at some point - someone will add all (or at least enough) behaviors to the game to represent schizophrenia in a fair light.