They propose the term “biological role” instead. Thus, presumably, “the function of teeth is chewing” becomes “the biological role of teeth is chewing.”
I would argue that a chronology of exactly what was predicted when is not dispositive as to whether a positive argument can be made.
Functionality for junk DNA is prevalent, and was successfully predicted by intelligent design.
In previous posts, I’ve covered how neo-Darwinism can make biological redundancy more confusing than it should be.
Rewriting the categories of biological redundancy in terms of function clarifies their purpose and contribution.