I agree with this article, but I'd put it a little differently. Alan Turing's pardon is 100% right and should therefore immediately be extended to any gay person who has been arrested, detained, or persecuted for being gay.
It was wrong when it was used against Oscar Wilde, it was wrong when it was used against Turing and it was wrong when it was used against an estimated 75,000 other men, whether they were famous playwrights and scientists or squaddies, plumbers or office clerks. Each of those men was just as unfairly persecuted, and many suffered similarly awful fates. To single out Turing is to say these men are less deserving of justice because they were somehow less exceptional. That cannot be right.