I thought the same but if I look carefully behind the roof section that has been built in front I can see what appears to be a monitor section.
Three things in particular would concern me: the roof in front; the extra windows and the inner dimensions.
I suspect that of these the dimensions would be most critical as I can accept that the roof will not affect air circulation during the summer and the extra windows would be shut in the winter so would not impact the air cushion effect that is critical during the colder months.
Also I would be concerned about snow build-up between the roof and monitor. In high snow or ice+snow circumstance the build-up would be difficult (impossible?) to remove; the building itself would need to be overbuilt to deal with the stresses created. It may be that the OP's location makes this concern moot but in my area I would not even consider this arrangement.
Please note that I am not criticizing, as
@aart says location matters and what might work in one location may not work in another. My comments are intended to caution others who may consider modifications to the Woods designs. It is proven to work over many many decades and has some key principals that are key to correct functioning, I would not mess with them.