The primary goal of populist politicians is to capture (or rather to “buy”) political support, win elections or keep political power. Therefore, they do not use tools necessary to bring long-term prosperity to the people but rather take advantage of whatever can guarantee them short-term political gains.
Hopefully, PiS will moderate its economic programme after the election and renounce some of its harmful pre-election promises. If the new government decides to choose the “Orbánisation” path it will be harmful for Poland, the region and the EU
The dramatic upsurge of CHF/PLN exchange rate in mid-January 2015 triggered in Poland a wave of discussion on the situation of people with mortgages in Swiss currency and who should be deemed responsible for such a state of affairs.
But you cannot build economic well-being only on pro-democratic political changes. You also need economic freedom and all the other keywords listed above.