I think they’re getting at the difference between using powers of 10 vs powers of 2.

So 1 kb (kilobyte) = 10^3 = 1,000 bytes, but since computers tend to use powers of 2, sometimes they might use 1 kb (kibibyte) = 2^10 = 1024 bytes

Strictly speaking, kilo always means 10^3, and kibi always means 2^10 so they’re not equal. But in common parlance, the difference barely matters so it is common to use kilo- even when kibi- is strictly correct.

The same holds true for bigger prefixes like giga (10^9) and gibi (2^30).

So I think that guy was getting at those differences even though the number he said makes no sense even if you account for the giga/gibi difference. So maybe I wrote all this for no reason lol