Summary: Its a real result, the cool part is more qubits seem to live longer rather than shorter, bad part the results are not explicitly verifiable, only through extrapolation
a) error-correction needs small level of errors to begin with to amplify signal - we finally got to that point, and larger correction setup deals with more errors
b) "standard" benchmark problem now 100% computes something uncomputable with classic chips (in practice) - the problem is that it's so quantum, neither it is verifiable with classic chips anymore