ExB: all the best scientists and evolution experts who make a case for intelligence being involved.
Who would those be? You imply that there is as strong a case being made for either concept (chance versus design), but is that the case? There are evolutionary biologists who believe in god. How many of them are producing peer-reviewed papers on evolution that mention the role of god, or 'design'?
My point is that yes, bias is inherent in everyone's approach and opinions. Science attempts to minimize that through a rigorous process of testing, documentation, and peer-review. Science can get things wrong in the short term, but over a longer period of time it refines what it knows as more is learned and more people investigate. The theory of evolution has more than 150 years of such work put into it. Thousands of scientists, more than a century of effort, countless man-hours of research and review. No god. No intellect. No design.
I don't think the two approaches are anywhere near to being equally supported at this point.