Ethereum Foundation Loses Another Senior Architect as Tom Lee Stays Bullish on ETH ETF Flows Into 2026

Carl Beek, a senior Ethereum Foundation researcher who helped architect the early design of the Beacon Chain and played a central role in the KZG ceremony, announced May 18 that his last day will be May 29 — closing out seven years at the organisation. The departure adds to a pattern of senior technical exits from the Foundation that observers have labelled a 'brain drain,' raising questions about the long-term stewardship of Ethereum's core research layer.

Set against that backdrop, Fundstrat's Tom Lee has maintained a bullish outlook on Ethereum ETF inflows heading into 2026, arguing that institutional appetite for ETH exposure remains structurally intact regardless of internal Foundation turnover. The two narratives pull in opposite directions: one points to a talent attrition risk at the protocol's research core, the other to growing TradFi demand for the asset itself.

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