The arXiv model worked well for LK-99. The preprint went up. It got some buzz from authoritative sources. Different labs tried to reproduce, some succeeded but

The arXiv model worked well for LK-99. The preprint went up. It got some buzz from authoritative sources. Different labs tried to reproduce, some succeeded but some failed. Through this process we've learned much more about the object in question, and what else but this learning itself is the point of the scientific endeavor? How does an anonymous and inscrutable committee help in this process?