Hang on, wouldn't a sliver of any magnetic material behave like this within a moving magnetic field? This replication is a fail, yes?
That it interacts strongly with a magnetic field shows that a big change in the material, consistent with superconductivity, has occurred.
Quantum level effects are newly appearing in the macroscopic world, and that's always interesting.
Most materials are diamagnetic, but only very weakly so.
I think that a new room-temperature material that was so strongly diamagnetic that it could lift the weight of its own volume in lead probably would bring some interesting new applications.
Getting "stuck" in a magnetic field is called "Flux pinning", which is what we're seeing here, from what I understand: https://en.wikipedia.org/wiki/Flux_pinning
Magnetic material can't do this. They're attracted. As some of the videos have shown, with large magnets placed next to the samples, they are not attracted.