I would not, however, assume that he was sober when writing whatever it is you are reading.
His fixation on Mother Theresa is frankly bizarre, to the point of suggesting some kind of relatively mild mental illness.
Yeah, he does like to exercise the old elbow a little too much. It's an occupational hazard I'm afraid. You're right, his Mother Theresa thing is truly strange. I want to ask him, "were you beaten up as a child by an Albanian nun or something?"
He recognizes, at some level, the good in Mother Teresa that no amount of bad news coverage can hide and it scares and bothers him. He doesn't know how to deal with that and it stirs up feelings within him he doesn't want to deal with, it clearly hits a nerve. So he attacks. He should know better. I don't follow him that much. Did he launch such attacks on her while she was alive?