So he is suggesting Alan Turing’s homosexuality to be caused by strained relationships with parents… still seeing being gay as some kind of personality disorder, that could have been avoided by people taking better care of Turing?
If anything it might be seen as forward thinking and caring, as opposed to people who thought it was a sin caused by the devil, and/or the person was cruel and wanted to do depraved things.
"It's a mental illness, don't blame the person", is kinder than "They are filthy amoral degenerate", but not as kind as "It's as valid a relationship type as heterosexuality"