Woofun AI reports that Barry Plunkett, co-CEO of Cosmos Labs, described dYdX's partnership with Robinhood to launch Arcus as a "rational choice." He noted that dYdX faces competition from Hyperliquid, Lighter, and Kalshi, alongside broader DeFi declines. Plunkett stated the shift has limited impact on ATOM because dYdX Chain is sovereign, meaning its fees and security do not benefit ATOM. He emphasized that foundational platforms are crucial for teams with strong distribution, while Cosmos focuses on bank tokenized deposit solutions.