You say that the autonomous mobility of the BionicMobileAssistant makes it fundamentally different from the Festo Bionic Handling Assistant, which is more static, and that the challenges are incomparable; but I believe this distinction is too rigid because they share bionic manipulation as a basis.
We are talking about additional challenges, not a complete break from the concept.
For example, a robot that handles delicate objects in a factory and another that does the same thing but moves around in a warehouse often use the same gripping technologies and fine motor skills.
The ability to move is an added function, like a delivery person using the same coffee machine as a stationary barista.
It's not a new species of robot just because it knows how to walk.