Ok, Maybe I am not coming across correctly..
Mislabeling is never right, regardless of the circumstances, but it is understandable in some at least (where the real product is either unavailable or just so damned expensive that nobody would buy it)...
What I am trying to fathom out is why some Halaal places go out of their way to make substitutes for food that is haraam in its original form, what is the appeal to a muslim person eating substitutes like that? and also it pisses off non-halaal customers who order the item that is mislabeled.