On-chain governance is its own worm. On-chain governance is usually determined by a weighted vote of tokens among governance token holders. However, if these governance tokens are in the fast lending pool, then any attacker can mine a large pile of coins and attack any result they want.
Of course, most governance protocols require these tokens to be locked during voting to protect against lightning attacks. But certain forms of voting do not require this, such as carbon voting or Maker’s execution contract. With lightning attacks now on the table, these forms of voting should be considered completely broken.