Why not?
I work in an engineering field. If I'm a construction manager and I'm asked to oersee the construction of a highway project that I suspect may be poorly designed, then I'm not going to build the thing.
And I really wouldn't give a damn if the design drawings are signed off by 500 different licensed professional engineers, either.
You are not making a MORAL judgment about the construction but rather concluding it is improperly designed that is a PROFESSIONAL judgment. Jeez.