Some evolutionists do exactly the same thing.
http://www.freerepublic.com/focus/f-news/1472221/posts?page=77#77
"While Einstein was a theist, everything I've seen from him indicates that he believed in a seamless continuity of natural law."
This is precisely why evolutionists must not avoid the question of origin of life.
The Origin-of-Life Prize ® site puts it this way;
Must? Where do you get must? "Must" mechanical engineers keep up with the latest in electrical engineering? "Must" an architect who specializes in building apartments and condos "not avoid" designing factories?
Scientists work on whatever research problems are intriguing to them, or whatever they think is worth their time, whatever is necessary to provide the groundwork for solving other problems they'd like to address, and etc.
A scientist isn't "avoiding" problems A and B just because he or she decides to work on X and Y instead.