Well, in this group we all know that "proof" is not an operative word. When asked for "proof" the reply is often (I paraphrase here) "Proof is for math, science does not use proof". In light of that condsideration, to ask how something disproves evolution is not a consistent application of the premises in the discussion. It is evident to me that ground-up and tree-down are mutually exclusive methods to achieve a single end in this particular instance. If it were not so, I believe scientists would have offered a plausible hybrid theory by now. So with all of the "quantification" inherent in fitness functions etc., one or the other of these methods of evolution should be predicable. This is not apparent. What is apparent is that just-so stories abound in Darwinian evolution.
As to both being true at the same time, they both are in a way. We know animals that glide and, of course, birds fly off the ground.