I don't see how anyone can. I also do not understand how anyone can see so much order, so many rules, laws in the Universe and no one questions who wrote them who enforces them, why there are such laws at all. In a way the evolutionists and materialists are the descendants of the atomists who likewise rejected order for chance, laws for chaos because they understood even then that order requires an intelligence to organize it. Just like Hume denied his own intelligence in order to deny God, the evolutionists and materialists of today deny their own humanity for the sake of rejecting something, anything greater than themselves. Seems that their desire to be on top of the heap is so great that they do not care if it is a dung heap.
It doesn't matter whether the design evidence points as far back as 5,000 years or 15 billion years or whether it is in math, information theory, physics or genetics.
Metaphysical naturalism lays claim to science of all kinds because science avoids religion. And science cultures its doctrine by defaulting the difficult and unexplainable into the anthropic principle. You can see if you agree by reviewing the end of this link: Cosmological Patterns and Galaxy Biasing (pdf)
One of these days, the public will realize that metaphysical naturalism is a religion.