Elon Musk asked today why Ethereum co-founder Vitalik Buterin left X, the platform he acquired and renamed from Twitter.

Musk's question came as a reply to X account Autism Capital, who shared their opinion that "Vitalik needs to get back on X."

Buterin has been active on Farcaster, a crypto-centric Twitter-esque social media platform. "Farcaster feels like it's gotten to the point where it's quite usable as a Twitter alternative for lots of people," he wrote in February, adding: "The channels thing actually makes it *better* in many ways in my opinion."

"Farcaster isn’t going to win the culture war," Autism Capital opined. "If he wants Ethereum to shine he should engage more on [X], not sequester himself with his chosen peers on an island. He will have far more impact if he engages …