Here is an actual source: https://cointelegraph.com/news/ukrainian-government-launches...
Quote: “Aid For Ukraine shows how the global crypto community and the traditional financial system can work together,” said Solana Labs co-founder Anatoly Yakovenko. “Crypto donations to the DAO are stored and governed on-chain, then transferred to FTX, a centralized exchange, to be sold for fiat USD sent via SWIFT to the Ukrainian government.”
So basically people in the US (not the US government) sent money to Ukraine using FTX as an exchange to fiat (lol). Seems the whole thing is more like a PR thing than anything else.