We have the technology and modern medicine and people still reject it. That’s where the problems come from.
Unfortunately, modern medicine has been hurting its own credibility with the 'butter good/butter bad, apples good/apples bad', sort of nonsense, which is about the level of scientific understanding of many of the masses, despite what should be one of the finest public education systems in the world--instead given over to socialist dogma, victim studies, and mush.
And sadly, there are competing forces, which would 'harvest' organs for transplant on the one hand, or simply be relieved of the 'burden' of caring for or visiting a relative who is greatly dependent on others for care, whether that motivation be emotional or financial, on the other, all allied in the push for 'quick' solutions, and not necessarily the 'right' ones.
This discovery, however may help lead to mapping the nerve centers and pathways which could lead to a breakthrough in spinal cord or even brain repair, a way to (for instance) cure those injured in wartime and in peaceful pursuits.
It is still the least understood organ in the body.