LK-99 reproduction experiments conclude it isn't a room-temp superconductor

Now that a bunch of scientists have a crack at trying to make LK-99, that material from South Korea that was hyped as a viable room temperature superconductor, Nature is now saying LK-99 probably is not the superconductor of our dreams. A lab in Germany managed to make "pure, single crystals of LK-99" and determined that "LK-99 is not a superconductor, but an insulator with a resistance in the millions of ohms — too high to run a standard conductivity test" and that "the hints of superconductivity seen in LK-99 were attributable to Cu2S impurities, which are absent from their crystal". I don't know what that means, but I do know that handheld quantum computers, gigawatts of electricity over hair thin cables and maglev trains are not happening any time soon.