You act like conservatives focusing on what other people do (to the point of even outright fabricating it to have a straw man to attack), while willfully ignoring how perfectly they actually epitomize every last point, is something new. I admittedly haven't read the book, but I think what you're in hindsight viewing as predictive is in fact just reflecting what has been a common inherent aspect of the ideology (it just wasn't always as wantonly openly blatantly hateful/spiteful as it is now - but it often has shown signs of being exactly that, be it Reagan's staff mocking AIDS sufferers and gay people, and of course conservatives hate of "others" and can't not mention their vileness that has continued to wage war on Civil Rights even after we had to make a huge effort to address black rights for the 2nd time in the 60s).
I've repeatedly said it, I'm ceaselessly baffled (but no longer surprised) by how conservatives can be so self-absorbed (sure they like to jam their nose into what everyone else is doing, but it always goes back to how it affects them) while having so little actual introspection. The dumbest part is that all the typical ones they like to chastise liberals (or rather the small groups of liberals that they have always tried to project as representing the entirety of them) for, they have hijacked themselves (as you pointed out, they're the ones now pushing "natural nonsense", anti-vax, etc, etc; I have a hunch that its more that the toxic insanity of the Republican party attracted their figurative flies to the Republicans shit for brains).