If you are not willing to kill babies and adults with Down Syndrome then your argument is incoherent.
Saying it's controversial allows lines, like killing adults with Downs would also hurt a lot of people around them who love them.
Abortion of course is controversial, the are thousands of different rules and time limits in different jurisdictions because it's so hard to understand. One assumes this is excluded from your argument since it's so obviously controversial.
Also this is not 'Iceland' this is the world where people are rich enough to care for the health of their babies. In these place most people chose to abort.
You also have other Sophies choice questions since the first test has a very high false positive you have to test properly with a 1 in 200 chance of miscarrying a fetus that is healthy.