Earlier quoted context omitted.
Who came to this consensus? I'm not aware that the quantum machines have been able to do much beyond, say, factoring 21.
I think they were factoring 21 a decade or so ago. Now the record is at least 261,980,999,226,229. Although my understanding is that this # was somewhat cherry picked and the algorithm they used (not shor's) worked well on this 48 bit number but wouldn't scale as well as Schor's algo to sizes that are cryptographically meaningful
Do you have a reference for that achievement?