There are already many companies selling automated carts that run around warehouses. Search for "automated guided cart".
I thought the humanoid thing was silly until I saw the pricing. Here's the Unitree G1, starting out at US$22,000, less than a Toyota Corolla. I though these things were going to cost like Boston Dynamics products. No, the hardware is already much cheaper.
This is still a low-volume product and prices are headed downward. Humanoid robots are going to be cheaper than cars. Having more degrees of freedom than you really need for any single job will be outweighed by the cost advantages of mass production and the advantages of interchangeability.
The manipulation problem remains tough, but with moderately priced and standardized hardware available, more people can work on it.