Bill has many hallmarks of a psychopath and I reckon he is one. You see him use this continual put-downs of other people.Tick. He talks down to others like he's some sort of superior being. Tick. He's continually crowing about his claimed achievements in this or that field. Tick. His postings are totally cold and lacking any trace of humour. Tick. He is completely unable to empathise with others in any way. Tick.Totally emotionless. Tick. The one biggie we can't see is if he has a piercing, empty stare characteristic of the species as identified by Dr. Robert Hare in his Psycopathy Checklist. I believe John Larkin was unfortunate enough to meet Bill once so perhaps he can tell us if the last point fits the puzzle.
Only a tiny proportion of psychopaths are the deranged killer types we get to read about in the newspapers. Many of them are (unlike Bill) highly successful in their careers. Their ability to spot weaknesses in others and to exploit those weaknesses ruthlessly frequently results in them rising to the top in the fields of business, industry, commerce, banking, the media and so forth. Just really seriously unpleasant people for decent folk to have to encounter, basically.