Although the fallen nature of humans does make us try to twist data to suit
our views or suppres the data that won't be twisted, reality limits our
ability to do this. Many non-Christians have realized that a moral system
similar to that prescribed in the Bible works well, even though they do not
realize that this is because of the way God designed us. Similarly, anyone
interacting with the natural world quickly realizes that there are certain
patterns that work, whether or not they acknowledge God as the source of
them. If science is defined as limited to physically testable assertions,
then dishonest scientific claims can be disproven by later scientists.
Certainly, there is the issue of making claims outside of science that may
not be honest, but this is no different from the case for non-scientists.