To my perspective, chronologic has just lined up several projects and the upcoming Chronos platform will give DAY tokens a boost. For PG opting for ETH it is just their preference. But the underlying smartcontract would use DAY to facilitate accruing interest as the blog stated .
Do you see any reason for someone to choose DAY over ETH? Say you get a loan via DAY, DAYs value keeps depreciating while ETH does the opposite. Why hold DAY @ all? You're right, it is their preference, but who would prefer DAY? I dumped it for less than my previous post stated. They shouldn't have let them opt to eth, it destroyed this coin and now they get more money due to the deal. Shady