Disagree about the popular support thing. In Britain, certainly, the Divorce Reform Act was passed with neither popular support nor opposition, just a public who didn't particularly care. The people pushing for it were a small number of activists, who were also in favour of these social "liberalisations" like abolition of the death penalty, etc. Many of these "lilberalisations" were in fact quite unpopular. I think you greatly underestimate the institutional leeway available to politicians/regulators.

It seems to me that you are arguing that some small groups of activists somehow managed to manipulate the democratic governments of multiple countries in a short span of time, without the general public taking notice, despite the fact that this alleged manipulation affected in substantial (and significantly negative, in your opinion) ways the family life of many people.
Sorry, but I don't think this is a rationally tenable position.