I do not think we are morally sophisticated enough, as a society/species, to handle that without it going to shit.

That seems like it would get really awkward fast. We'd probably have to give them full human rights (particularly if they successfully learned our language and demanded rights), but they might not be able to adapt to a homo sapien society. Also whoever funded their recreation wouldn't be able to keep them as property, but would probably try to.

Mammoths are easier in this regard since we already have a framework for how to treat elephants.

^^^this. I would find this infinitely more interesting than cloning a wooly mammoth or a dinosaur.