You are missing the point - to me and my social group we were not aware of the civil liberties thing. It may of been an open secret in your social group - but not mine. You can not make a statement for me.
I also know that our memories tend to be selective and that we tend to re-write history to our best advantage (I believe it is regarded as a survival trait).
It was a move in the right direction, with hindsight, but participate equally? Really? I remember the main characters being Kirk, Spock, and Bones. Look at that white and male. A bit of Scotty - the rest supporting actors.
I wasn't aware that Star Trek was addressing as many social issues as it was at that time. It didn't cross my mind that casting Nichelle Nichols as Nyota Uhura was controversial or that GR used her character to represent the African continent. I was a boy and just took it at face value.
Who would have thought that Sci Fi could be pushing so many social boundaries, but as it's set in the future it is in many ways the perfect cultural form to do that.
So one of my original premises was, 'It's culture that drives change in societies and the way we humans think collectively'. That's based on my studies of culture as a progressive force for humanity.
Hikaru Sulu wasn't portrayed as gay and George Takei hadn't admitted his sexuality. It never crossed my mind to think about the characters sexuality except that maybe Kirk was a lothario.
So yes I'm looking back retospectively, and when I say that it was an 'open secret' that Gerge Takei was gay, I mean among his circle of friends and maybe a few actors.
Just like many male actors who were gay had to hide it to get roles that required men to to inhabit the macho construct to get parts in tv and films. The fact that he discussed addressing the 'gay issue' with GR suggests he was not really trying to hide it, but wanted to bring it to the mainstream.
I think in the same way that casting Nichelle Nichols was viewed as a breakthrough by the African American community, when George Takei admitted his sexuality that was seen as a breakthrough for the gay community, just as his ethnicity had been seen as a breakthrough because that was obvious.
Of course later as tribute to George Takei, in 'Star Trek Beyond' Sulu is portrayed as a gay character by John Cho.
Although George Takei reportedly wasn't happy about that as it in many ways it reflected the fact that he had to hide his own sexuality for so long.