Zelensky let them out after many years in prison when faced with full scale war, I do like how you are silent on Russia recruiting violent offenders in prisons to go to Ukraine though. And no, it was not just Wagner doing so, and even Wagner was doing it with explicit approval from Russian government.
The audacity to compare Ukraine, which has incredible level of transparency during this invasion in every aspect, welcoming auditors and investigators from all over the world to Russia is very telling of your biases.
I am Russian, I am well aware of nuances, but to even begin to compare the two is insanity in 2023.