Ethereum co-founder Vitalik Buterin has reignited his critique of Bitcoin, posting a controversial message on Farcaster after a month-long silence. The post, shared on the Berlin channel, included a photo of a graffiti wall with the words "Fuk bitcoins. Das ist unser Krieg," which translates to "Bitcoin, go away. This is a war between us." This statement underscores ongoing tensions between Ethereum and Bitcoin communities.