They have obviously never read Dr Adams' columns, which are mostly satire
The gay activists stated goals are to eventually have “polyamory”, or group marriage. This would involve any number of partners, and any gender combination of partners, in a group marriage.
While this is a conservative writer writing a satire, some of the points are well taken. The laws against incest were put in place in part due to concerns about inbreeding. Inbreeding is not an issue with same-sex close relatives in a partnership, so there’s no reason not to allow it.
Gay activists sometimes say that they are consenting adults in a loving relationship. And who are we to say anything about what consenting adults do? The same legal reasoning on same-sex marriage can and will be used in a court eventually with concepts which would shock us, such as polygamy, group marriage, or even incest type relationships. The key here is that we are supposed to accept anything that consenting adults want to do.
And to hear the liberals say that “any two people should” belies an underlying idea that the number of people in a marriage should be two, when there is a long history of polygamy in the world. The liberals are discriminatory limiting marriage to two people. Especially since the gay activists stated goals are to move on to polyamory eventually.
The gay activists want to move the goalposts on marriage. If we ever get to 50 state same-sex marriage, the activists will NOT say that their lives are now complete, and end it there. It will simply set the stage for new demands.
The goals of these leftists is to establish the legal concept of homosexual marriage, the concept that the sex of the people involved doesn’t matter. Then, once the legal concept of same-sex marriage becomes ingrained, then they will move on to the the polygamy/polyamory issues.