I felt like folks were getting too optimistic in the early days and now I feel folks are getting way to pessimistic. We don't know if any of these failed replication experiments actually made the same LK-99 the Korean team did. The only way of knowing for sure if LK-99 is a room temp superconductor is if outside labs test the samples the Korean team has made. It's entirely possible that the exact impurities in their material caused by their exact manufacturing process are required for superconducting properties to emerge. Seems like that will be done in the next few weeks. Still betting against it working but keeping my fingers crossed.