appear to know anything about SI, as he says that "the kelvin will be replaced by the SI." in other words he thinks that "SI" is the name of a new unit.
to do that measurement is with four wires and two FET amplifiers with their outputs cross-correlated. I gather that there's more going on in this scheme.
What they should have said is (probably true) that in the near future the K is no longer defined in terms of the triple point of water. Just like the seconds has been redefined several times.
Groetjes Albert