Aside from just BTC, ETH and USDT20, now they’re accepting DOT donations and hopefully other coins and tokens (e.g., BNB, MATIC, AVAX, etc.).
I think this is because of Gavin Wood’s post here: https://cryptoslate.com/polkadots-gavin-wood-to-donate-5m-to-ukraine-if-they-post-a-dot-address/
In my opinion, it’s better to have multiple options in case others feel that BTC, ETH and USDT20 are expensive in transaction/gas fees for donations.
I don’t know who is gonna be next? Polygon? BNB? TRX? Hmmm……
I am not surprised that Polkadot is now added to the available options to donate to the ukraine in the end it is one of the biggest crypto projects out there and it has very low transaction fees. So in this regard Solana would also be a good option for Donations becaues this way people can also donate very small amounts like 1$ or so which is not really practicable on the ETH network because there you would have to pay 10$ worth of fees in order to send 5$ worth of donations.
For me this crisis shows again that crypto is a very good alternative to the traditional FIAT as it becomes obvious again, that you can never shut down crypto even if you want to and i also read a story about reporters that bought a used car with bitcoin in the ukraine in order to get out of there because they did not receive any more money on the ATM's.