Except it is literally is just rational geopolitics. The story of the Russian invasion of Ukraine is not just a single whimsical choice by a mad dictator. There has been a decades long encirclement campaign by NATO which ultimately pushed too far. That's not to say that states joining NATO did not do so willingly and of their own accord, but that it played into a larger struggle for influence that disadvantaged Russia on the world stage.
The moral dimension is also completely illusory. Ukraine is fighting a war of attrition that's funding is due to the same cold-hearted power politics that Russia subscribes to. It greatly benefits the US and EU to keep Russia in an expensive, resource-intensive, prolonged military engagement. Put another way, the US is knowingly sacrificing Ukrainian lives and infrastructure because it gives us more power; however, at the end of the day we get to drape our actions in nice sounding rhetoric about supporting national independence even though that is merely accidental. Not to mention that the Ukrainian government has legitimately persecuted Russian-speaking minority populations in the country. Obviously, this has very little to do Russia's actual motivations for the war, but the point is the Russia's actions also have accidental good effects.
The moral dimension is also completely illusory. Ukraine is fighting a war of attrition that's funding is due to the same cold-hearted power politics that Russia subscribes to. It greatly benefits the US and EU to keep Russia in an expensive, resource-intensive, prolonged military engagement. Put another way, the US is knowingly sacrificing Ukrainian lives and infrastructure because it gives us more power; however, at the end of the day we get to drape our actions in nice sounding rhetoric about supporting national independence even though that is merely accidental. Not to mention that the Ukrainian government has legitimately persecuted Russian-speaking minority populations in the country. Obviously, this has very little to do Russia's actual motivations for the war, but the point is the Russia's actions also have accidental good effects.