Also people have come to know that in these crisis times, only bitcoin is the true store of value. All the centralized fiat currencies controlled by the banks and local governments will lose their value in war situations.
So you are saying that Bitcoin has not lost value or gained any value during this conflict? Bitcoin went up to $43-44k, people donated some money, the currency's value than dropped to $37-38k. If the value of the received donations was $10 million at $43 k/coin, for example, is the buying power of that Bitcoin the same now at $38k?
Short-term, Bitcoin hasn't proven to be stable. And short-term is the only way Ukraine and it's government can think right now. They are at war right now and they need financial support today. They can't hold and speculate what the value of the donated assets could be during the next bull run. But Bitcoin has still provided both Ukraine and Russia with new opportunities to finance their operations and that's something they don't have through traditional routes.
I don't think we can call this adoption yet. It can turn into full-scale adoption only if the citizens of both countries realize the benefits of using Bitcoin and they start buying and using it.