Seems like a gimmick. Why would you even need a humanoid robot to do this? Wheeled solution might be faster.
World is still designed for humans. Anyway, the hardware is almost there, all that prevent robots from walking around and doing jobs in the "real world" is just software, which is progressing so fast. One day, there could be a overnight software update that can turn your humanoid robot into something that can only operate in a controlled environment on the factory floor , to one that can be deployed clean your toilet. You never know. If that was the case, the country that didn't invest in the hardware is gonna to be very behind very fast.
I think one of the big draw for humanoid robots, once the hardware/software improves enough, they can be deployed do other jobs/factories easily. Can't do that for a big industrial robots who sole purpose is welding and only welding. And of course, humanoid robots kinda force you to improve other aspect of technologies that robot makers don't usually consider. Things like the hands, balance, legs, sensors so that they don't accidentally crush or injure their human coworkers, all things that caged robots don't have to consider. If you really want a wheeled robot, most companies can probably easily make you a version with wheeled legs. But then you never improve your technology...
Anyway, this kind of technology are based on "potential". You might as well ask why the world is busy spending billions on far flung future technology like nuclear fusion when nuclear fission power plants can do the job already. Or why are people trying to hard to grow organs/3d print organs when we can already harvest organs from car crash victims. Why spend so much money on longevity research when you can just exercise or eat healthy. Why try to create AGI when humans can still do 90% of their jobs better. Why pour money into quantum computers when classical computers can currently do 99.999999% of their jobs better and cheaper.
Everyone can agree that this kind of technologies are probably decades away from being ready, but are so extremely game changing that every country/company would want to be at the forefront of research just in case some surprise breakthrough happens or just playing the long game by setting up the foundation in the 2040s when the technology does advance enough to be widely deployed or commercialized.