Putin has famously claimed that Russians and Ukrainians are the same people for the same reasons that Hitler claimed that the Sudetendeutsche are the same people as the Germans - to justify an illegal imperial attack on a neighbor.
Russian imperialism needs Ukraine, since without Ukraine there's no Russian empire. Russia invaded Ukraine out of imperialist delusion, not for humanitarian reasons.
You have thoroughly bought into Russian propagandist lies.
> for the same reasons that Hitler claimed that the Sudetendeutsche are the same people as the Germans
Indeed, but Hitler is not famous for mass-murdering the Sudetendeutsche.
And I never claimed that Russia invaded Ukraine for humanitarian reasons. I think it did because it could not tolerate a Ukraine fully integrated in the West and NATO- but this just means exercising political control over Ukraine, it doesn't imply an ethnic cleansing or genocide of Ukrainians.