I think that depends.This is certainly the popular view, that man is the best that nature has to offer thus far in its evolution.
I agree with you in that I think the idea that evolution is a linear progression towards perfection is a flawed one.
The Scriptural view that man stands at the apex of creation is founded on the idea that man can know God, and as we both agree, not from any scientific viewpoint.
Christian metaphysics views human nature as one that is 'open to the infinite', and from there we get into the mystical senses of aligning the human will with the Divine will, and/or that the human intellect can host or in some small way unite with the Intellect.
St Maximus (again) summed it up in the sense that at ground level there is the mineral world, then there is the flora world (mineral+) then the fauna world (mineral+flora+), then the human, then the angelic. Angels are higher than humans because they are pure intellect/spirit, humans are higher than angels because they are a unity of intellect/matter, spirit/body ... so in man all physical creation is present, and man can be consciously present in and to God.
There is the question: "If God made man, why did He not make him perfect?", and I wonder if indeed God made the many universes, and in this one, man went off the rails, whereas there are others where man stayed 'on message' as it were, and walks in the Garden and never fell ... If, as I am reliably informed, according to Quantum theory, Elvis is alive and well somewhere, then we can posit a somewhere where Eve looked at the fruit and thought, "Whoa, I'm not touching that, you sweet-talkin' devil, you!"
It might just be that this is the cosmos in which man fell, and clawed his way up again ... it might just be that we occupy a cosmos in which the roll of the die went against us ... that is, we are one of the universes where evolution took a random wrong 'un.