See what you did there...
I said " why would they not be interested in..."
you turned that into...
"having a detailed knowledge of biology, geology, astronomy, physics, etc."
See what you did there? You trimmed your own quotation to make it seem that I had misrepresented you. You didn't just say "why would they not be interested in...". You said, "why would they not be interested in the details to the point of obsession?" Having an obsession about the "flora and fauna" that God created would seem to me to imply a "detailed knowledge" at least in the area of biology. But if you are going to insist on that for believers, why stop there? God also made the earth and the universe, right? So we need to have a detailed knowledge in all of those areas, too, according to your reasoning.
it's only within the last generation or so that atheists seem to have become dominant in the sciences
Isn't that like saying it's only in the past 30 years that computers have been so widely used in scientific research.
No, I don't see that it is. Computers simply didn't exist until 50 or 60 years ago, and have only become widely affordable within the last 30. Before computers, there were calculators, slide rules, abacuses etc. And I'm sure they were widely used in scientific research in their times as the most advanced technology available. 50 years from now, if there is more advanced technology available, I'm sure that will be used then. So the rise in the use of computers over the last 30 years has more to do with availability than anything else.
Atheists, on the other hand, have been around for thousands of years, but have only recently come to dominate in the sciences. I don't think this has anything to do with the advance of technology. Rather, I think it has to do with the rise of a philosophical commitment to materialistic naturalism in academia. Once, science was seen as a means of determining truth, but not the only means of doing so. Now, science is regarded - completely on the basis of faith - as being the sole means by which truth can be known. Even for those things science cannot explain, it is presumed that someday science will discover the answers (a bit of a "science-of-the-gaps" argument, if you will).
There is a difference between science as method and science as philosophy. I have no problem with science as method, as long as we can acknowledge that it may not answer every question, particularly ultimate questions. Science as philosophy, on the other hand, is based on philosophical presumptions that are unprovable, but are accepted essentially by faith. An example of this would be Carl Sagan's famous line from Cosmos: "The Cosmos is all that is or was or ever will be." Really? Can you prove that? Where is the level of "evidence" for that statement comparable to that which is routinely demanded when someone argues for the existence of God? Where are the skeptical challenges to that faith-based assertion? Science deals with the physical world. It has no bearing on the non-physical and cannot prove or disprove its existence. But the new dogma is that anything that can't be explained by science (at least in theory, whether or not an explanation is currently available) simply cannot exist. Those who reject the party line tend not to progress in academia, and so the sciences become dominated by atheism. The reasons have more to do with politics than truth.