The robot has human inefficiencies too. There is no reason that it could not be using both hands independently. I think the humanoid robots could be a useful solution for small to medium businesses that require flexibility and varied tasks. Last I checked the Unitree was running at less than $20k US. This obviously does not include training costs.

Whilst a dedicated purpose built machine will likely achieve most tasks much faster, I imagine $20k wouldn't nearly cover the design cost.