Moving slowly from a state of irrelevance to a state of expectant interest
Nothing claiming the term "Supremacy" should be based on a calcification specifically rigged for the target platform, that does nothing that can't be done on another platform, and also doesn't do anything useful. IBM's complaint that the answer is solvable in a reasonable amount of time seems valid enough, but more of a concern in calling out the google teams "creative" math. It's not even scare quotes "Quantum Supremacy" or "Quantum Supremacy Lite"*** where the *** declaration is pointing to a 50 page list of weasel words.
The minimum we should accept for a claim of limited Quantum Supremacy would be the quantum computer reliably solving a useful, real world calculation faster and more efficiently than conventional computing resources. Full Quantum Supremacy should be declared when a full quantum or hybrid system is faster and more efficient than all other general purpose computers. The rest of these claims are marketing frippery.
Marketeers will not be meaningfully harmed if they are prevented lying to the rest of the world by making these false and over hyped claims.