Did you notice this part...
The revolutionary technique consisted of scientists creating a hybrid of donor tissue combined with tissue generated from Sánchez's stem cells, which were drawn from her bone marrow. They took a donor trachea, stripped it of the cells that would cause rejection, and replaced them with Sánchez's own cells. The team of researchers was composed of scientists from the University of Barcelona, Britain's University of Bristol, and, in Italy, the University of Padua and Milan's Polytechnic.
You notice that it was her own stem cells, NOT fetal stem cells.
There have been, to my knowledge, NO medical breakthroughs coming from fetal stem cells.
All of the breakthroughs have come from ADULT stem cells.
I have no problem with stem cell research, as long as its adult stem cells.