So, your counterargument is that birth control and Saturday Night Fever will have a bigger effect on the evolutionary process than enabling people with congenit

So, your counterargument is that birth control and Saturday Night Fever will have a bigger effect on the evolutionary process than enabling people with congenital diseases to reproduce, and that, moreover, this will somehow continue to produce increases in intelligence at the same rate as we experienced going from ape to human? I'm not claiming evolution is finished. I'm claiming it is affected and I don't see compelling pressure to select for ever-greater intelligence. Even if I found your argument compelling, you're hardly talking about the same kind of intelligence as the GP. Intelligence is one of those squishy things that resists good formal definition.