He's not completely wrong, there's something people are overlooking http://news.xbox.com/2016/03/14/lett...x-updates-gdc/

Of course, it’s up to game developers to support this feature, and Xbox Live players will always have the option of choosing to play only with other Xbox Live players.
The bold tells me they will still force devs to have XB1-exclusive servers, since they are promising XBL players an option to play only with other XBL players, something SE will not accept.