Central exchange always choose profit and with a simple calculation, you will find that supporting the Ukrainian position is more profit than supporting the Russian position, although these platforms may not have a problem with Russia and may allow Russians to deposit and withdraw.

The lesson that must be learned is that when you deposit in centralized platforms, they own your money and they can use it from you, and then your cryptocurrencies will become useless and move to shares controlled by worse parties than the stock exchanges.

Note that with some cryptocurrencies, even when you withdraw to your wallet, your funds can be frozen and therefore it is not dcentralized like BSC & USDT.