While these sub-ideologies did exist, they were fringe. This is now a primary issue for conservatives and it has been brought into the zeitgeist and their political platforms. That is different. Most, close to all, conservatives were not considering this in the late 70s. I know you know that.
Not as fringe as you may believe. Raymond's book sold a lot of copies. But more impactfully, radical feminist ideas on this topic and others continued to develop, and became increasingly influential from then to now.
One aspect of this that often isn't considered is how women with shared feminist ideals but differing political backgrounds have been working together across the aisle. As a result, radical feminists on the left have had significant influence on conservative policymakers via these informal collaborations. Look at EO 14168 for example.
Here's a review of her book, from 1979, which lays out many of the same points around this issue as are being discussed today: https://www.nytimes.com/1979/06/10/archives/male-and-female-...