Can we actually restate this as a 51% attack on Ethereum. But by the community itself, with powerful (yet not code-level enforcing) influence of Ethereum Founda

Can we actually restate this as a 51% attack on Ethereum. But by the community itself, with powerful (yet not code-level enforcing) influence of Ethereum Foundation and rich people who has invested in The DAO (and lost money on the hack)? How is this really different than a 51% attack?