It doesn't even have a mid-motor but rather a cheap-o hub motor. It's like the iPhone 1 of e-bikes.
So I never considered buying a mid-motor ebike.
Having it apply torque via the chain/belt also mean you can gear the motor output on your back wheel.
They weight near nothing for power levels legal on bicycles.
Even on low end mopeds, motor weight is not that big of a problem.
It is at power levels of around 7.5kw, when it becomes a problem.