I would think they chose the jellyfish because it was genetically “simple,” and once the process is perfected, the process could be applied to something more complex and presumably more useful, like maybe replacing the faulty genes in a Down’s sydrome child in-vivo.
Or chopping out the gene that causes certain breast cancers.
Etc.
I dont know friend, If your making twelve heads now on a “simple genetic creature”, then it would seem we should already be curing cancer with “monkeying around with genes”. I am amazed at how it’s reported like it’s no big deal. Hey by the way gays getting married is normal and if your offended by it, why you are just backwards.