I agree that genocide is a big word, and that comparing and contrasting to other big words like "ethnic cleansing" and "war crimes" is exactly the conversation.

I also think that the public exposure of the horrors of war by the accessibility and technology of the modern press makes the conversation harder. War is horrific, but not all horror is genocide.

Which is why I noted that 8 nations are calling it genocide - maybe subtract 1 'cause 1 of the nations is Ukraine - conflict of interest.
Dozens of other nations are looking closely at what's going on and can only say, "From what limited information we have, it looks like genocide, but the fog of war is occluding a lot of information and we can't say for certain."

What you or I think isn't relevant. What the political leaders of the world think is relevant. We control no forces. They do.