You removed the last few words because the libertarian fight is to promote that homosexual agenda.
Prior to 1962, sodomy was a felony in every state, punished by a lengthy term of imprisonment and/or hard labor.
At the time the broad statutory definition of "sodomy" included orogenital contact, period--which meant between members of the opposite sex, too.
Whether the homos were behind the straight people wanting to engage in activity even between a husband and wife (man and woman) covered by the broad definition in those laws or not, the people I heard who were for repeal of the laws wanted more sexual freedom in their own, straight, bedrooms--without the threat of possible incarceration for sex acts with their spouse.
The homos were solidly in the closet, and could get their butt seriously kicked if people found out. There was NO 'protected class status' for them then whatsoever.
That fight wasn't even about Libertarians, it was about getting the government out of straight people's bedrooms.
You're right, in the sixties and early seventies, the faggots weren't even on the radar--they were still in the closet.
But if a cop caught your girlfriend with her face in your lap at the drive-in, you could both go to jail in a lot of states.
So normal people fought laws which made fellatio (performed by a woman) and cunnilingus (performed by a man) a felony.
Because no one was even thinking about faggots, none of the normal people who fought laws that dated back to Cotton Mather even cared about the queers.