I’ve been to Ukraine and you are full of it. Often middle class people have dachas with outhouses but the dachas really serve as their garden plots. Even in small towns, the plumbing works well. Labor is cheap and plumbing repairs are quick and efficient except in Russian occupied areas where everything goes to Hades.
The only thing worse than the toilets in Rivne are the water heaters in Dneiperpetrovsk. I think I prefer the outhouses!