I have various disagreements, but the real biting one is this:
It fails to account for Transhumanism.
For many years, opponents of Transhumanism have described it as techno-utopian fantasy that will never come to pass, and maybe the brain uploading part and the Singularity are, but they’ve been getting a lot quieter about the rest of it recently.
We have vat-grown organs in labs already.
We have nervous-system controlled robotic limbs.
We now have established, in a lab setting, some pretty serious genetic modification on human embryos, removing genes for a disease.
These aren’t science fiction. Only their economic viability is - for now.
Recently mouse lifespans were increased by 10-15% with stem cells in the brain, and studies on blood health with mice have also been promising (inspiring all those jokes about Vampire Peter Thiel).
There is a point where lifespan begins to increase more quickly and healthcare costs start to come back down again, where screening out genetic diseases and selecting for higher performance first hits the wealthy and then everyone else. This starts to undermine the effects of lowered fertility on more left-wing social configurations.
It undermines race, it undermines social darwinism, it undermines demand for religion.
You can ban it in Europe, you can ban it in America, but if you do, then the research will merely continue in Asia.
You might get a shift rightwards socially, but I don’t think it will look like what you expect. It will probably be in the form of a more holistic view of society where it is acknowledged that we can only afford to be kind if we’re careful not to increase the situations that required us to be kind in the first place. All the bitching about gays is a sideshow.