I disagree that there is a difference the DNA message and the DNA material. The information in DNA that is transcribed and then translated is only one component of DNA, the four bases, structurally supported by a non-coding backbone. You can write out a genetic sequence on a sheet of paper and it doesn't mean anything. Although we can figure out the amino acids products that make up a protein, there is no way to convert that information into a biological product. To say DNA is a language is only partly true. The usefulness of DNA being a message is entirely dependent on it being a material part of the cell.
To suggest that advances in the understanding of cell biology contradict evolution is ludicrous. Genetic analysis is helping in terms of categorizing the organizational hierarchy of species.