Words matter, mainly because they stand for something meaningful. For instance, if you call genocide “the great solution,” or “living space” it is still really just genocide, but the strange, deforming euphemisms you have thrown up in front of the horror of murder might confuse the dim or comfort the monstrous.
So, for instance, if you call an unholy mixing of embryo parts from two species, one human, one not, a chimera and you call the embryo parts gastrulation, and you leave out any issue of obtaining consent from the very small and then you leave out the part about keeping these living entity for endless experimentation then destroying them.
Even then it sounds unbearable.
Some things we should not do not just because they are monstrous and destructive. Some things we should not do because they make us monsters of destruction.