His mental illness is beyond question. However, the fundamental (pun intended) issue that this country needs to address is whether he was made that way by the religion or was he attracted to it because he is crazy?
There appears to be a strong correlation between mental illness and religious conservatism of all stripes (come on down you snake handlers), e.g., rejection of science or rational thought (and Esseghaier was a man of science too) when it doesn't fit with the apocalyptic end games planned for the believers and apostates.