The cost-optimized mundane everyday machines that we expect to move are endowed with 150x that energy output -- and with the ability to sustain it rather than burst it. 1kW is large for a human but small for moving a big chunk of metal. Since the sort of resonant motion would be thoroughly damped if, say, you built a full scale ISS in your backyard, I tend to agree with them that it's notable.
> The cost-optimized mundane everyday machines that we expect to move are endowed with 150x that energy output -- and with the ability to sustain it rather than burst it.
A perfect example is a large water pump, a 250hp electric pump draws approximately 150kW (480v 3ph, around 300-310 amps).