I served in the ranks for most of the seventies when any hint of 'Gayness' would be hunted down punished & ultimately dismissed from the service.
Even today, I cannot imagine in my own mind openly gay people in service, thanks to the way it was then. It somehow reminds me of the American 'Black squadrons' of the second world war in a way.
I had left the service long before the instant 'About turn' & feel it must have been forced upon them, probably by the EU thing.
I would have liked to have observed this sudden 'About turn' seeing grim faced investigators having their cases dropped on the spot! Guilty one moment, not guilty the next.
I would have liked to have seen this change in attitude first hand & I suspect the whole thing was very carefully planned with new entries coming in all the time.
The whole 'PC' thing is very 'Pick & mix' I would support some arguments, but not others.