I understand your point, rizla, and indeed it has been said that if Turing is accorded this 'privilege', then it will open the floodgates for a multitude of similar claims for retrospective justice.
However, without Turing's work, we might all be speaking German, and have no computers. His efforts were rewarded at the time by being persecuted into suicide, so I believe it's right that he should be a 'special case'.