THIS 'device' is being put forward as a means to extend the viability of really early premature birth infants so they actually have a chance to survive - - - and NOT as an ARTIFICIAL WOMB with the ability to actually grow an infant from sperm-egg inception to birth.
True, but that doesn't mean it won't eventually become an artificial womb. If they're successful at using it to keep babies who are 15 weeks premature alive and healthy through their full development, then clearly the next step is to use it for babies who are 16 weeks premature, etc., etc. As they push back the age of viability new challenges will arise and be solved, and step by step it will get pushed back all the way to starting from an embryo. The development process will take years, maybe decades, but it's all but inevitable once we take this first step.