There's a rumour in that thread that MS plans for a Gold account to be mandatory for all games, even singleplayer ones. It sounds too crazy to be believable, but it kind of makes sense in light of the rumours that have been around for the last few months that MS is planning a cheaper model subsidised by a Gold subscription.
My guess is that there'll be two Xbox Ones, a standard model that costs around $500 and a subsidised one that costs roughly $300. If you buy the subsidised model and let your Gold subscription lapse, you can't play any of your games until you renew it. If you buy the more expensive model then you don't need a Gold subscription for singleplayer games, but you still have to deal with the ridiculous DRM.