One of the things that shows that Original Sin is real is the suffering and death of infants and the unborn.
Islam does not concern itself with this reality or seek to explain it. It is more concerned about conquering and subjugation than explaining evil. It just takes evil for granted and that it is something that Allah has ordained for the human race. After all inflicting evil through war, in which children can be caught up as collateral damage and even be taken as slaves, for the sake of expanding the influence of Sharia is not a bad thing, so why should Allah get upset about the suffering of children in general? Allah has ordained both and he has no problem with either of these things happening so we should not question any further?
The best that Islam can come up with is the idea that Allah puts humans to the test by making them suffer. This fails to explain why Allah also makes infants and the unborn suffer and die without any explanation or justification. A religion that cannot give an answer cannot be from God.