The aim behind Lido DAO’s dual governance is to safeguard Lido’s stakers and the Ethereum ecosystem by introducing an independent veto layer that mitigates risky or harmful proposals by LDO token holders

Quotes that support claims

The dual governance system is intended to safeguard against a scenario where Lido's LDO +3.52% token holders, who are the only ones allowed to create and vote in favor of governance proposals for the Lido DAO, attempt to vote in a proposal that would negatively affect Lido's stakers or Ethereum itself.

The new system brings a balance to the current governance model, where only Lido token holders (LDO) can submit proposals and participate in voting. The aim is to prevent LDO holders from approving a proposal that would negatively impact Lido’s stakers or the Ethereum ecosystem.