Believe that if you'd like, but nuclear reactors of that scale and precision simply aren't naturally occurring. From the Epoch Times article:
Faced with these findings, scientists consider the mine to be a “naturally occurring” nuclear reactor. However, Dr. Glenn T. Seaborg, former head of the United States Atomic Energy Commission and Nobel Prize winner for his work in the synthesis of heavy elements, pointed out that for uranium to “burn” in a reaction, conditions must be exactly right. For example, the water involved in the nuclear reaction must be extremely pure. Even a few parts per million of contaminant will “poison” the reaction, bringing it to a halt. The problem is that no water that pure exists naturally anywhere in the world.
Besides, several specialists in reactor engineering remarked that at no time in the geologically estimated history of the Oklo deposits was the uranium ore rich enough in U-235 for a natural reaction to have taken place.
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When new discoveries are made, they can be uncomfortable and controversial. There is likely to be natural resistance from others in the scientific community. However, if you look at evidence objectively, it cannot simply be dismissed, and to do so is subjective.