You need to remember that Christians are people, just like all other people.
Evolutionists, and especially evolution scientists, don't adhere to the greatest tenet of science that we know of... cause and effect. C&E says that everything is programmed according to complex programming that "causes" everything to react with the "effect" that happens. Rather, science tries to make "random" to be important, when all that random is, is lack of knowledge of the cause(s) behind the effects, and how the whole thing works together.
Yet, evolution scientists use C&E in everything that they do. In fact, the greater the scientist, the more he is into finding out the cause for whatever effect he has found. Or the more he is into finding a cause for the desired effect that he wants.
In the case of evolution, the desired effect is evolution without cause. So, there is entire contradiction in the process of science when science accepts evolution theory as it is suggested. And the contradiction lies in the statement that there is knowledge that evolution is real, when the term "random" in the theory says that nowbody knows.
Why should Christians not be swayed by evolution talk that seems logical? Are Christians generally such great thinkers that they should recognize the subtle double-talk of evolution theory? But it is God Himself that maintains all Christians in their faith in Him. Even when a Christian makes a mistake - like believing in evolution - if he remains a Christian, and asks God for forgiveness for mistakes he doesn't know about, God forgives him for this.