There's actually a new -- maybe worse -- indignity in the article: Jack Copeland suggests that Turing was essentially framed for suicide (also illegal then, I think) by the coroner, who said, "In a man of his type, one never knows what his mental processes are going to do next."
I prefer to think that, as the article describes, Turing coped with teh gay treatment by the gov't by recognizing it for the farce that it was, rather than becoming suicidal about it; and that he died because he was a somewhat careless amateur chemist -- a Maker in today's parlance.
It's a much more honourable and positive view. From the article (emphasis added):
Prof Copeland believes the alternative explanation made at the time by Turing's mother is equally likely.
Turing had cyanide in his house for chemical experiments he conducted in his tiny spare room - the nightmare room he had dubbed it.
He had been electrolysing solutions of the poison, and electroplating spoons with gold, a process that requires potassium cyanide. Although famed for his cerebral powers, Turing had also always shown an experimental bent, and these activities were not unusual for him.
But Turing was careless, Prof Copeland argues.
The electrolysis experiment was wired into the ceiling light socket.
On another occasion, an experiment had resulted in severe electric shocks.
And he was known for tasting chemicals to identify them.
Perhaps he had accidentally put his apple into a puddle of cyanide.
Or perhaps, more likely, he had accidentally inhaled cyanide vapours from the bubbling liquid.
Prof Copeland notes that the nightmare room had a "strong smell" of cyanide after Turing's death; that inhalation leads to a slower death than ingestion; and that the distribution of the poison in Turing's organs was more consistent with inhalation than with ingestion.