An Oct. 2 post by @DavidSHolz put a large number on humanoid robots' potential: 10 million machines, the author claimed, would provide enough physical labor to build New York City in five months. The same post asserted that the first Optimus factory would manufacture that many robots in one year.
The post it quoted, from The Humanoid Hub, used different wording. It described a Giga Texas facility with a target capacity of 10 million Optimus robots annually and initial production planned for 2027. That is a third-party account of a production target, rather than evidence that the factory has produced 10 million machines.
Manufacturing volume and construction capability
The discussion included an optimistic manufacturing argument from Teortaxes. The account argued that humanoid robots' smaller size and similar materials compared with electric vehicles could allow substantially greater production volumes, and predicted millions of robots soon.
Ben Reinhardt challenged the choice of machine instead. His argument was conditional: if software were capable enough to let humanoid robots build New York City, humanoid robots would be a poor way to do it.
The disagreement concerns both how many machines could be made and what form of machine would make sense for the work. The five-month construction estimate remains @DavidSHolz's claim; the factory post supplies a capacity target and planned production date, not a demonstration of that building capability.