While you are correct and it’s not comparable, does it really matter? Killing one person and killing 20, doesn’t change the fact that you are a murderer, or in this case, supporting a country with $500m or $500b, doesn’t change the fact that you supported it. He provided military and economic support to Ukraine, according to that, he’s also involved in this war.
If it does matter, where do you personally draw that line, on how much support can someone give, until they are considered involved?