I think he is well aware of this. The current quantum device Google build is however not much different than a sufficiently complex other physics experiment and so far they have not been able to demonstrate that it is capable of fault-tolerant error-corrected computation (which they basically won't be able to do in the foreseeable future).
Everyone agrees that Sycamore isn't fault tolerant, but I don't think many people agree that it is "not much different than a sufficiently complex other physics experiment". Here's a test: do you think there is any device that could be achieve quantum supremacy without being fault tolerant? If not, then your complaint isn't specific to Sycamore at all.
