That said, I don't know how bad ü -> u is in Turkish. At least in German, doing so often changes the meaning, and äöü have to be transliterated as ae, oe, ue instead. (Obviously a ton of software does something bad like "decompose Unicode characters and filter out non-ASCII letters" and gets it wrong, also hilariously failing the test.)
And in general, sure, every country should get to decide how it wants to be referred to (although I suppose that can raise complicated questions as to who gets to decide that too), but in any case asking a blog from 2008 to retroactively adopt that decision is asking for a bit much, I'd say.