Would you subject your child to a 1 in 1000 chance of being brutally disfigured? Well genetic defects that cause much the same thing are more common than that.
The use of genetic measures over measures of the phenotype in that movie was silly. Cognitive genomics will never be as accurate as an IQ test. It would be a mistake to, for example, replace the SAT with a spit swab, even in a society with genetic engineering.