Not familiar with 'Bayesian Statistics', but I agree with you (I think). Bayesian logic application to psychiatric/psychological conditions seems ilimited. Basically because each individual and their underlying condition is often unique. The logic might be able to set up broad diagnostic/treatment generalities, but individual conditions are, well, individual and require individualized treatment.
That's where the 'art' portion of medicine/treatment is applicable.
That's where the 'art' portion of medicine/treatment is applicable.
Being told you're delusional does not necessarily mean you're mental.