Actually this is promoting war. Because if you are donating to someone who is at war, you are participating in this war.

Some people just think that Russians will never come and ask them why did these people give money to kill their brothers.

Also it works like a promo. First you are supporting someone with tweets. Then you are sending money. Then you are sending weapons. Then they send you to the battlefield, because You know, it's very important to support Ukraine.