Supporting these sanctions is just cheerleading for the advancement of US global hegemony. The United States and friends are using this to harm a rival. They couldn't give less of a shit about Ukraine.
We have two sides, then, who don't give a shit about Ukraine. One whose actions include invading and annexing it, bombing its civilians, children and hospitals; and the other whose actions include... locking a country out of a payment system.
To you, the former warrants no mention, and the latter is far more objectionable.
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In other news, it's the 7th anniversary of the assassination of Boris Nemtsov, a critic of Vladimir Putin who protested the 2014 annexation of Crimea. He was gunned down in a public Moscow street, within walking distance of the Kremlin.
His assassin was a former member of the security force for Ramzan Kadyrov, former member of the Chechen independence movement, turned Putin loyalist. The assassin was paid to carry out the act, but Russian police/ security forces never bothered to investigate who ordered the hit. Wonder why?