Yes, that was my first thought. There are absolutely instruments which can directly measure resistance down to 10E-8 ohms/m or lower, and I would expect any lab doing research into superconductivity to at least have one of those.
Nobody has tested it at 0.0000000000000K after all
And science isn't about saying wood isn't a superconductor because it's impractical to test. That's not a result. You may be getting science confused with engineering.
It'd be cool to find it was superconducting at a temperature near that high though. That'd still be one of the best high temperature superconductors we've found.