I think he was always planning on getting them properly made by machine, that's what the kickstarter is for (the upfront cost).
His other advantage is being Chinese, and therefore not having to bother with any of the expensive wireless approval process that's normally required for this sort of thing.
Theoretically, no. However, if he makes a bunch of devices and posts them to the US, in practice the FCC are never going to be able to enforce the requirements on him.
His other advantage is being Chinese, and therefore not having to bother with any of the expensive wireless approval process that's normally required for this sort of thing.