I'm not Ubuntu's biggest fan, but they are doing the right thing here. The SI units are defined as powers of 10, not 2, so using k to represent 1024 is corrupting a standard. The current situation, where some use binary and some use decimal units is confusing. To take Nordle's currency analogy, it like some quoting prices with VAT and some without, but not telling you which.
If you want to represent 1024, use the correct prefix, kibi, kilo has been defined as 1000 for hundreds of years. The confusion only arises because this situation was allowed to continue for far too long. All power to Ubuntu for taking a stand on this.
"Insanity: doing the same thing over and over again and expecting different results." (Albert Einstein)