Actually men can make eggs from male cells and their own cells actually.
Interestingly enough women can't do the same.
Also, the fake sperm is completely nonviable. They've been busting ass in the labs in hopes of making it work because rich lesbians across the globe want that shit to work.
But...to no avail.
The only thing they've been able to create were genetically mutated clones of the female father that didn't survive long after implantation.