I'm only guessing but my thinking on how the thought process went was.. People wondered why he was sticking up for Turing in particular - a lot of people have

I'm only guessing but my thinking on how the thought process went was.. People wondered why he was sticking up for Turing in particular - a lot of people have been abused by the government (and society) in the past. They wondered if he had a certain interest in this specific case; and they falsely assumed it was an issue of sexuality, forgetting that Turing was a geek too :)