No, it was standard IVF by a sperm downer, the historic first referenced in the title is that they are the first married lesbian couple in South Korea to birth a child.
It’s probably a typo but I can’t stop imagining what a sperm downer would be.
Someone who hates sperm? Someone who brings down others with sperm? An slur for a lesbian? Someone who can’t stop guzzling cum? Someone with Down syndrome who can’t stop cumming?