But yeah, inflation in Eastern Europe is pretty bad, and if you voted for a bunch of dumb assholes who don't care about you or the nation, you're multifucked.
Rio de Janeiro was Brazil's capital for centuries (even before it became an independent country), it only changed to Brasilia in the 1960s, well within living memory of many people, so that one is justifiable.
I was just listing a few other famous "unintuitive" capitals. Another one would be Milano vs Roma, although the two are evenly matched on the cultural level.
If you ever lived in countries with irresponsible central banks like Brazil or Argentina you'll notice there are often laws to dissuade you from using the crappy local currency.
The vote tally and the resulting leader are not necessarily related in these places.
Having said all that, the largest denomination that's legal tender where I am (Scotland) is £1, filling up with fuel today cost me £100, and I'm not in the habit of carrying around that much loose change.
Also, it's absolutely the case that a store where you receive the goods after paying for them may accept (or decline) whatever they choose. Many shops on Edinburgh's High Street, for example, have signs in their windows saying they are quite happy to accept Euros or Dollars. Not that you'll get a particularly good exchange rate, mind.
For example if a company would build a shopping center using loans in EUR, and then would rent the shops in EUR.
This practice has been banned, I think at the time of the previous currency crisis (2018) and now prices must be in local currency