I don't know about the Russian word this page honors, and of course you may generally feel free to enjoy whatever letter combinations you like, but to people who actually speak the respective languages such words are likely to sound not merely strange and awkward but in some cases even downright repugnant and might cause this feeling of embarrassment one feels in the stead of someone else—is there a word for that? ^^ As I said, this is probably not about razbliuto at all; I've no idea what word really feels like.
I don't think it matters that this word is entirely made up. It's made up, has a definition for something that has previously not ever had a word to describe it, and it is enough of a legend to have appeared here as well as many many other websites and references. Why shouldn't it become a word?
The fact that it is included in such collections of 'untranslatable' foreign words as Rheingold's "They Have a Word for it" and the completely unreliable "The meaning of Tingo" is testament to the poor quality of the 'research' underlying these books.