Actually, I wasn't calling you illiterate. The original article was a really long read with quite complex language at times. It was slow going with a mix of stats and university level English. I had the problem. So my apologies for an inadvertent insult.
On full scan DNA testing: Yes it should be possible within 5 years to get full scans at a reasonable price. If there is a specific DNA fault tied to a particular problem, it will probably find it. (Full I expect to mean mean 1% of the DNA, the 'exome', which I understand generates all the proteins.) Worth doing, I agree, if you can afford it, or if there is a likely (familial) fault and it is worth it for a society to help you avoid propagating a serious problem.
Pinker argued that whilst there are these specific and valid cases, the interpretation of the genetic fitness of an individual is just plain too difficult in the majority of cases. My opinion is that a generation from now it should be different, but the snake oil merchants are not going to wait that long. The valid cases will not pay for them; they will prey on fear and the misunderstandings of statistics. If someone pays $1000 for a test, telling them they do not have any one of 20 rare cases just means they have blown their money. If you go on to elaborate on probabilities and possibilities, then you catch their attention, and they recommend the test to their friends. I dislike what I see as a probable social outcome.
My opinions may be dead wrong, but I am not bothered by that. I express them as a way of having them open for examination, and discarding if need be. Piss on them by all means. But if 'eugenics' is worse than talking to a gossip, I think this comparison should be made clear. Telling people that there is some convoluted statistical correlation that implies they have a potential health problem then they will worry, or alternatively, not employ or insure someone. Say you talked to the local gossip and then trot out the same conclusion and you will be despised. I think there is going to be too much money invested in 'eugenics' to allow people to make rational decisions.
I've been in science, and had to try and explain technology to policy makers who were ignorant of my area, and pretty shaky on even simple stats. In the end, simple comparisons are all that worked. "Eugenics is not as good as talking to your family." That message may undermine billion dollar investments, but I still think it is valid.
On the other hand, I do have a genetic fault that has resulted in a heart op. The DNA link is unknown at present. Long term, yeah it would be nice for family members to know if they have the problem, as it can be better managed than I did in my ignorance. At least when it comes to being dead wrong, the emphasis is still on the wrong.