They're claiming to have found a small number of microscopic particles that are superconducting at 500K, with details on how they found those particles. They acknowledge that making contact with those particles to directly test their resistivity is particularly challenging. That is, even if this is true, there's a long road between the discovery of microscopic particles and mass manufacturing / large scale integration.

It would be quite inappropriate for them to brag about revolutionizing anything at this stage. The field recently witnessed that with overstated claims surrounding LK99. Much more appropriate to publish methods and allow other groups to verify or refute their findings.