Right, what you just said is exactly what I referenced in my original post, and I even offered a counter-argument to it. I'm asking if there is any actual evidence to support these claims, because I haven't seen it.
There doesn't seem to be a consistent release strategy, so I don't think that argument has any merit at all. Moments cards gain a tier, except when they gain two. A guy with an Emerald can't get a Ruby until he has earned a Sapphire except when they decide to give him the Ruby.
And again, if they wanted to have an att that only serves to manipulate overalls, there's no reason to make it visible in-game.