A network of bots and paid activists are tweeting about Ukraine. They are also present on BlueSky and Mastodon. They are inactive here because of the small audience of Nostr. In Nostr there are some real live people who write only about Ukraine, but they are present in all social networks. Nostr is just a mirror for them, not the main tool for spreading propaganda.
It's much more profitable for them to promote #bitcoin here.