From the little I’ve seen of discussions, it depends on the implementation. I haven’t looked at the details yet, but apparently there are some groups who require at least an initial animal biopsy, and I think someone said something about some growth mediums requiring animal exploitation as well.
Then there’s the animal testing side of things.
Since both health and animal rights matter to me, I have no interest in consuming the stuff. If a commercially viable company emerges that can make these meats without any animal exploitation or suffering though, then I might recommend them to others.