You have a point. I will here review the Wikipedia article, and write my critiques here as I read.
He initially purchased more than 300 from two brothers, Carlos and Pablo Soldi, who also collected pre-Incan artifacts, who claimed they had unsuccessfully attempted to interest archaeologists in them.
True. After their death, I believe that the Soldi brother's large collection ended up in the storage room of the Ica regional museum (I'll fact-check that assertion in a moment).
In 1973, during an interview with Erich von Däniken, Uschuya stated he had faked the stones that he had sold. In 1975 Uschuya and another farmer named Irma Gutierrez de Aparcana confirmed that they had forged the stones they gave to Cabrera by copying the images from comic books, text books and magazines. Later, Uschuya recanted the forging story during an interview with a German journalist, saying that he had claimed they were a hoax to avoid imprisonment for selling archaeological artifacts. In 1977, during the BBC documentary Pathway to the Gods, Uschuya produced an Ica stone with a dentist's drill and claimed to have produced a fake patina by baking the stone in cow dung. That same year, another BBC documentary was released with a skeptical analysis of Cabrera's stones, and the new-found attention to the phenomenon prompted Peruvian authorities to arrest Uschuya, as Peruvian law prohibits the sale of archaeological discoveries. Uschuya recanted his claim that he had found them and instead admitted they were hoaxes, saying "Making these stones is easier than farming the land."
I hope that this entire snippet shows you the good reasons Basilio Uschuya had to lie. I would also be interested in knowing if baking a stone in cow dung actually makes patina believable enough to fool scientists.
In the end, not too impressed. They gave no evidence for the stones being fake other than that the supposed forgers admitted that they were. Now I can better understand why @T_aquaticus is constantly trumpeting this, and @gbrooks9 utilizes the circular reasoning of "since dinosaurs died out millions of years before humans came on the scene then, if we find evidence that dinosaurs and humans lived together, the evidence must be fake since dinosaurs died out millions of years ago."
Not impressed. Case is still open as far as I'm concerned!
I still wish that some scientific organizations that you actually consider credible would do some tests on the Ica stones...However, I would be very surprised if they wouldn't just blow them off right away. To be honest, though, I would like to get to the bottom of the whole Ica Stones thing, and (if I'm wrong) I want to be corrected as quickly as possible.