And for the record, "sub-nm ASIC" is not a technical term, it is the most laymen friendly term used in the semiconductor industry. [...] sub-nm is anything below 100 nanometers.
SubnanometerEnglishAdjectivesubnanometer
1.
Having dimensions, or a resolution of less than a nanometer The word this kid wanted was Sub-micrometer (µm)
No, sub-micrometer is anything below 1000 nanometers, not 100 nanometers. Maybe they use "sub" the way it's used in "submarine" - not below the ocean (that would be within the sea bed), but at the lower parts of the ocean.