A robot doesn’t have that weakness.

Robots have battery capacity limitations, they get “tired” in a different way. Your claim is true if you invent a battery that never runs out of power.

I’d go further to argue that it’s very necessary for robots to have even more mobility such as wheels to take advantage of momentum and increase efficiency. There’s a reason the wheel was invented, things like bicycles, wheelbarrows, etc.

The ANYmal wheeled legged robot is an example of that.

https://newatlas.com/robotics/anymal-swiss-mile-quadruped-wheeled-standing-robot/