If a hard drive has exactly 8'269'642'989'568 bytes what's the benefit of using binary prefixes instead of decimal prefixes?

There is a reason for memory like caches, buffer sizes and RAM. But we don't count printer paper with binary prefixes because the printer communication uses binary.

There is no(!) reason to label hard drive sizes with binary prefixes.

True and that's what the article is about. You should check out the interactive diagram in the "(Un)lucky coincidence" section.

You should read the blog post. It's not a matter of option.

Pretty obvious that you didn't read the article. If you find the time I'd like to encourage you to read it. I hope it clears up some misconceptions and make things clearer why even in those 60+ years it was always intellectually dishonest to call 1024 byte a kilobyte.

You should at least read "(Un)lucky coincidence"

Did you read the blog post? If you don't find the time you should at least read "(Un)lucky coincidence" to see why it's not (and never was) a bright idea to call 1024 "a kilo".

Did you read the post? The problem I have is redefining the kilo because of a mathematical fluke.

You certainly can write a mass in base 60 and kg, there is nothing wrong about that, but calling 3600 gramm a "kilogram" because you think it's convenient that 3600 (60^2) is "close to" 1000 so you just call it a kilogram, because that's exactly what's happening with binary and 1024.

If you find the time you should read the post and if not at least the section "(Un)lucky coincidence".