It's possible to develop an allergy to metals. I have a strong allergy to nickel to the point I get really painful oozing sores if I wear anything with nickel in it for a full day (like belt buckles or metal glasses frames).

I can handle change and metal items like knives to use them, but not prolonged exposure.

Yeah that's possible, but the influx of money after will help stabilize Ukraine like the Marshall plan. South Korea after the Korean War and Europe after WW2 show it's possible to avoid a full on collapse of society if you give people funds, hope and a plan.

The 90's was a collapse because the entire system collapsed into total anarchy after the internal rot reached the tipping point. No one knew who to trust or how to make things work.

Ukraine has friends, access to Europe, access to credit, easy access to the internet and information, a charismatic leader and a population that is motivated to build back better.

It's not guaranteed of course, but corruption by definition involves stealing from the many to benefit the few. When the many are trained, disciplined and motivated it's a lot harder to do that.

Hopefully the fact that a significant proportion of the people in the country are trained and experienced in violence as a problem solving method will actually be a stabilizing factor.

Normal corruption methods don't work when you have to worry the person you're trying to swindle has an AK47 in their closet. When the GI's returned to America from WW2 there was at least one instance of them clearing out a corrupt local government the hard way.