("People! This congenital defective costs a total of 60,000 Reichmarks of your money!")
. . . and this:
More critically, the author completely misunderstands the concept behind the German term.
These people were not viewed as a danger to society or as morally hazardous or unfit.
They were simply the retarded, severely ill, crippled, etc. They were a drain on society's resources, not a moral hazard to it. Getting rid of them was like putting down a sick dog. No animus involved, just practicality.
OTOH, their true enemies (Jews, commies, socialists, Jehovah's Witnesses, Roma, etc.) were a great danger to the moral health of the State. They were evil, not inadequate. In fact, the Jews were dangerous largely because they were so competent. The equally "sub-human" Slavs weren't considered as great an initial priority for extermination precisely because they were incompetent. Or so the Nazis thought.
The two concepts eventually merged to some extent, but initially they were entirely different.
("People! This congenital defective costs a total of 60,000 Reichmarks of your money!")
. . . and this: