Absolutely not. The term mentality diseased (in the wt context) has nothing to do with a diagnosed mental illness but rather their twisted application of the scriptures. They use it as an insult towards those that no longer believe as they do regardless of an individuals soundness of mind. Its intent it is paint any who see the fraud as somehow mentally deficient and not worth listening too.... "Oh brother so and so dosent think generations overlap? Hes just mentally diseased! " the mindset was in place long before clinical diagnosis of depression was made.
Although the sublimanal picture people dont help.....