Nonsense. Sending USD or EUR (or any other currency) to Ukraine is very simple. You can go to their funding page, enter your credit card, and you're done. Then they've got money they can actually use.
What are they doing with all the crypto? Did they convert it to fiat? Is it just sitting there?
The only reason so many cryptos were sent is because there a lot of people who don't know what to do with their cryptos, they can't use it for anything and liquidating large amounts of crypto is a pain in the ass.