Yeah this is still a long ways off to be used for human trials. A womb isn't just a sack of nutrients, there's constant signaling back and forth that causes minute changes in nutrient flow and chemistry. It's why it's been so difficult to develop an artificial womb.

And it's one thing to grow a lamb (that was already partially developed) to full term. Sure it's a live, but is it healthy? How does its development into an adult compare to regular lambs? Will the lifespan be comparable? How about the quality of life?

This is more like a future method of helping babies born prematurely not face a lifetime of permanent defects due to a sub-optimal development. They can be put in this artificial womb to grow better than the current methods we have. Which is absolutely a good thing, but this is years off and even more years off when it comes to completely replacing natural wombs.