I find it amusing how a media article about another article where researcher are warning against media hype, is hyping their original popular science article. An article in which they claim the problem starts with researches that have their own agenda. That should tell you enough.
While researchers, journalists, and bloggers copy each others bull droppings other people are carefully recording very clear results while doing stem cell therapy.
There are a thousand amazingly smart rocket scientists, and then there is Elon Musk.
Theory, and practice.