Why not?
There are two arguements...one that macro-evolution maintains a rough balance with species rising or falling depending on conditions, mutations, rocks falling out of the sky ect. The other states that man has disrupted this balance, has destroyed ecosystems to suit his own avaricious hatred of the Earth to the point that our species could totally destroy itself and the very earth as well, especially as our science moves beyond mere atomic weapons which themselves could erase life on earth.
So how could Macro evolution have created an organism with a consciousness that acts antithetically to the processes that created it, that could very well destroy it through war fare or miscalculations in the manipulations of the very genetic codes of life?
That is the shadow of the mountain that biologists avoid adressing, the question that Christians maintain that Genesis chapter 3 addresses.
I dunno. It failed to plan ahead?
(If I'da known there'd be a test I mighta studied.)
Simple. Because the traits that give man this ability, to transcend and rise above macro evolution, provided a selective advantage at some point.
Evolution is not a person. It does not act it its own interests.