To me, your attempt at defending it or calling it a retcon is an awkward characterization. Even in your last reply: now you're calling it an approximation. Dividing by 1024 is an approximation? Did computers have trouble dividing by 1000? Did it lead to a benefit of the 640KB/320KB memory split in the conventional memory model? Does it lead to a benefit today?
Somehow, every other computer measurement avoids this binary prefix problem. Some, like you, seem to try to defend it as the more practical choice compared to the "standard" choice every other unit uses (e.g: 1.536 Mbps T1 or "54" Mbps 802.11g).
The confusion this continues to cause does waste quite a bit of time and money today. Vendors continue to show both units on the same specs sheets (open up a page to buy a computer/server). News still reports differences as bloat. Customers still complain to customer support, which goes up to management, and down to project management and development. It'd be one thing if this didn't waste time or cause confusion, but we're still doing it today. It's long past time to move on.
The standard for "kilo" was 1000 centuries before computer science existed. Things that need binary units have an option to use, but its probably not needed: even in computer science. Trying to call kilo/kibi a retcon just seems to be trying to defend the use of the 1024 usage today: despite the fact that nearly nothing else (even in computers) uses the binary prefixes.
Vote. Seriously. (If practical: get involved, too). The U.S. is currently in the middle of a large shift of generational power.
Many of these changes are fairly recent:
Looking forward, the numbers only get better for younger voters. There hasn't been a demographic shift like this in the U.S. in a long time (ever?). The current power structures can not be maintained for much longer. It is still possible for that shift to be peaceful. Please encourage the peaceful transfer: vote. Vote in the primaries. Maybe even vote for better voting systems. This time is unique, but change takes time. Don't let them fool you otherwise: that's just them trying to hold on to their power.