As long as you aren't reading stuff like this you shouldn't be too troubled Don't "print" in Cyrillic. Russians will laugh at you like you're a child. I learned that the hard way, lol.
Transnistria isnt the first country that issued plastic coin. In fact the record goes further than 100+ years issued in Cocos Keeling island which is now adminstrated by Australia. https://en.numista.com/catalogue/cocos-1.html
They are not the first to use plastic coins for circulation, that honour goes to the keeling cocos islands
One of the quirks of the ex-USSR states is that roads that crossed the republics of the USSR borders were not a problem in the USSR - but when they became independent countries all of a sudden there are roads that criss cross the borders in several places. Which is exactly how I "visited" Transnistria in 2008 while in transit to another part of the country I was in. It wasn't the "kosher" way to go through, but avoided the customs hassles and bribes etc.