This will probably be the outcome but it’s way too early to be making this claim as fact. The article references one lab in China that found no SC. Meanwhile there’s a different lab in China claiming that there is SC.
The material is non-uniform and different crystal structures within the material are expected to have vastly different properties. The original paper was (suspiciously) vague about exactly how to create the material and different labs are following different steps to synthesize it. So it’s expected that they may get different results.
The original samples that inspired the paper have been sent to other labs for testing, those results should give us the final answer.