Alright, since this speculation cycle is over, I guess it's time to come clean.
I'm
@papagenos original source. I am
NOT his Microsoft source, I'm the one who told him about Spirits and how they function.
Much like him, I was approached by someone, though for me it was via Discord, who was VERY forceful on pawning this info off on me. I don't know 'who' this person is nor would I remember them since it was from, back in September? August?, but I told him what I had been told by them, which was "Spirits are like Stickers, also Kencineroar is truth."
I didn't necessarily 'believe' it, but at the same time, in the end, it ended up being true so, eh? I have really no idea why that Discord fella spilled their guts to me but..... okay I guess.
So yeah, I'm his OG source, and he can back up what I have to say. I didn't know anything else besides the Spirit thing and Kencineroar, which seemed to be more or less gospel by that point.