Evolutionary theory most importantly is based on physics and chemistry, which Creationists always neglect to mention, but they mention randomness so often it would make a parrot hoarse.
And why they have an issue with randomness I don't know. It's all over God's creation, and we're all the result of a random combination of our parents traits, which seems to be noncontroversial.
Yes, creationists who make a big stink about randomness apparently know as little about the Bible as they do about science.
I know exactly why they love randomness, because so few things are truly random (and really the more we know about sub atomic particles and how they interact it’s starting to seem likely that absolutely nothing is random) and the word has a connotation things happening without impetus (”just a random occurrence”) that once you manage to stick the label on anything complex people won’t believe it. So they try to get people to think that evolutionary theory says humans “randomly” came into being and therefore evolutionary theory is unbelievable. They carefully ignore the very much not random arms race that is survival of the fittest and performs the meat of the evolutionary process.
Randomness is a theological/philosophical issue. Its associated with the concept of predestination.