He could have gotten a sponsor, or just didn't care about that part of the problem.

Sometimes the rabbit holes you might encountered aren't interesting.

These motors won't be at full power for more than 100 milliseconds at a time anyway. It's fine to overload regular outlets by 10x for 100ms - and the specs of breakers even specifically allow for this use case.

Big appliances like air conditioners, especially old non-inverter ones, will usually do that.