Probably because they have been gifted “ discernment “. I for one have been there, ( and Russia), Ukraine is knee deep in corruption, from the teenagers in cahoots with the police putting boots on your car, to realtors, to every bank. Corruption is ingrained in their society.
The age old saying “ when shaking hands with a Ukrainian, be sure to check how many fingers he stole” , rings true with everyone in the EU, truer to those that have been there.
Just my 2c from one that has been there, done that.
You are absolutely correct.