he's speaking from the retail side...trades that go off at the bid tend more often than not to be a retail investor selling to an MM, trades that go off at the ask tend to be a retail investor buying from an MM.
think of MMs as a store, the more inventory the store has the more they are encouraged to get rid of it...even if it means dropping the price. the opposite is true when the product sells so fast they don't have much inventory
so what he really is saying is that 120 million was traded at .0003, and 6 million was sold to MMs at .0002...theoretically the store is moving inventory quickly and may want to raise their price to balance out demand if it continues