Benefits to the environment and to the companies making that switch would be less bag and box material (from downsizing), and faster bag filling and box loading.
The consumer conveniences of twin bags are easier handling and extended freshness, because one bag remains sealed while the other is being used. Given that the typical purchase of the club store package is for a household of heavy cereal consumption, freshness is no greater a factor than for the grocery store size. However, that’s not to overlook consumer perception shaped by years of promotion. In response, the companies can promote the stay-fresh qualities of the single bag.
