OK shock horror brigade, lets have some evidence. Lets see some hyper extension thoracic spine injuries from 44s. I am not aware of any.
The normal forces are downwards into the various collapsible sections (cushion, luggage compartment, skin, skids) or deceleration (ie spinal flexion) or lateral shears from rolling. How often do you get an accelerational force so you extend backwards over the top of the seat???
Dont worry I am sure there are other shock horror items you can identify. Yes it is made down to a price and needs to be treated with care, but without Frank Robinson most of us could never have afforded to learn....