What bollocks
He is well recognized. How many people in computer science etc have not heard of Turing Test, Turning Machine, Turing Awards,...?
I bet more people know of Turing than know of Haskell, Ørsted, Tesla and many others.
The main reason he was not recognized was because of the hush-hush nature of the whole war effort. If anything, Turing perhaps got a disproportionately large recognition for his war efforts. There are a lot of other significant contributors to code breaking that nobody remembers at all. Perhaps some of that was because he was dead and out of the picture, thus taking the heat off others still bound by secrecy etc and just wanting to get on with their lives.
Sure, he got victimised for being gay, but that was a crime at the time and it would be ridiculous to give him a pardon without giving other gay people of the time pardons too. We can look back on the past with some condemnation, but we can't change the past.
Suggesting that Turing should get special pardon becuase of his contributions just sends the message that gay is bad, but we'll ignore it in Turing's case because of his contributions.