I think you read my comment backwards, petrol always has a simple tank, even in F1 where a lot of baffles and what not go into the design for safety and perform

I think you read my comment backwards, petrol always has a simple tank, even in F1 where a lot of baffles and what not go into the design for safety and performance reasons. However, on electrified transport from the humble bicycle upwards there is a lot of extra brackets and boxes getting added. It is like cars from before the monocoque era, a chassis where none is needed. With the bicycle example you could put the batteries inside the frame instead of in a box mounted on the rear rack. These 'chassis style' products are not fine engineering and set a bad example.