You may be reading too much into this. The basic point is valid : scientists are human and have an inherent bias. Revealing the bias is always necessary to come to a reasonable conclusion.
Secondly, scientists always resort to the "i am only using the facts" argument, without a single thought as to how they affect society. A scientist must understand his place in the greater scheme of things. Read up on some Jacob Bronowski for some insight. My poor rendition would fail to do it justice
Bob