If there were widespread, state sanctioned war crimes by the Kyiv government, western governments would come under a lot of public pressure to stop aid. Zelensky can’t afford that.
Since you brought it up – there are widespread state sanctioned war crimes by the Israeli government. How much has that resulted in aid being stopped?
i believe, for what it’s worth, that the Russians have been another level of evil in this war. But Grozny, Aleppo etc don’t stand out much from Raqaa and Gaza as atrocities perpetrated on a civilian population, so I’m not confident that if/when the boot is on the other foot we won’t see some horrors of Ukraine’s making.