I think the problem Destin (host of the channel) faced, a.k.a. high production costs in the US, and the problem Unitree faces, a.k.a. no motivation to push for further automation are all both soft problems, meaning it can be resolved eventually if someone pushes enough to solve it.

If instead just creating few of the tools, Destin pushed to create $1T worth of it, then maybe the supplychain will automatically build around it.

If China's labor cost risen to the level that makes Unitree robots more appealing, then Unitree will figure out ways to automate their production line more to keep up with the demand.

All and all, it's not a capability problem, it's a "why do it, and why now" problem. Just like, say, sending people to Mars. The tech is already here, but why send people to a planet that (currently) don't even have enough stuff needed to support living? Except of course, Mars will probably stay this way much longer than a country changing course.

Also, just a sidenote: I think Destin misread the market. He wanted to create a "high-quality", "durable" product. Sure, it make sense to do it most of the time, but a brush? You know, that thing gets dirty in an dark and oily way very quickly. With a durable brush that's expensive to replace, then you have will a problem of maintenance, clean it etc. And grill oil is not easy to clean, do you now also have to buy another product just to maintain the brush? How about now I offer you a cheap made in China brush that will disintegrate in your hands after 5 times of use, but then you just throw it away and get a new one, no maintenance required. Of course, throwing away too many trash is bad for the environment, but guess how the other trash gets handled, including, say, toothbrush?

How about, invent a grill that don't need to be brushed? Just a rinse and it's done? Just a Smarter way to think about inventing, you know.