I really don't get this whole Phil Spencer is saving Xbox thing.
I haven't seen him demonstrate that.
The only way that's true is that you didn't pay attention to where Xbox came from in the later years of the 360 and you somehow slept through all of 2013 starting with the Xbox One reveal.
How could you miss transitions like going from Mattrick's TV TV TV and Kinect Xbox to Spencer removing Kinect as one of his first orders of business, shutting down Xbox Entertainment Studios, and focusing all of his conferences on games?
If that went over your head then it's not surprising that you also missed how the Mattrick era focused growth on pillar franchises (Halo, Gears, Forza, Fable) and third-party deals, with all other development going towards multimedia functionality and Kinect. He's the reason new core IP development dried up on the 360 from 2009 onwards. Spencer, on the other hand, has a variety of games released and in development.
Never mind that Mattrick wasn't even generally liked among Xbox fans, but Phil has earned a following and fans genuinely look forward to what he has to say.
No I think some people legitimately think him going "We will think about this" is borderline confirmation of the thing in question happening. If you go to previous Phil Spencer tweet threads whenever people go "this is vague, we can't make anything of this" there are people who respond in some way similar to "I'll choose to believe this"
When they're not working on something or it's not up for consideration he's been forward about it. You can't blame fans for letting their imagination run wild, that's something that happens for Sony, MS, Nintendo, Valve, etc.