Under 11.2 (below link) misrepresentation is explained...
http://www.cic.gc.ca/english/resources/tools/perm/express/refuse.asp
It calls for penalty / disqualification only if (even if there is ) the misrepresentation alters the CRS score such that the ITA is secured as a result of the misrepresentation ...if the CRS remains above cut off adjusting for the points gained on the misrepresented fact,the profile gets through,despite actual misrepresentation is proven...
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In the case being discussed,there is no 'mis representation'...both are qualified to apply in individual capacity (as it is no violation) and adding spouse as dependent is natural only....
I agree to the point on non linearity...however,so many extra such profiles (if there are) will result in impacting the cut off decision...
but,it is of course individuals freedom to have separate profiles and moreover it is also backed by logic....