threads like this make me wish ns thinkers was still active. anyway, i'm bored right now and have some time, so i'll give you my thoughts. this may get long.
i don't entirely understand your question. but let's start here. the thing about the uncertainty principle is that, for all intents and purposes on the macroscale, it's pretty useless.
what i mean by that is, say we have a car. it's moving. now technically, on a microscopic level, heisenberg says that we can't determine both it's position and velocity at the same time (i.e. at time t, their product has a finite error, mathematically). but if you look at the equation, that error bound is so small that it's almost irrelevant on the scale that we're familiar with.
meaning, if you know the car's velocity, it's possible to know it's position to within like .00000000001 of an inch (i pulled that number out of my ass, but you get my point, actually it's probably smaller). not a scale that really matters when you're looking at a 20-foot car.
so it's a cool theory, but as far as its effects on our everyday lives, there really are none that we see. that's a big reason why it wasn't published until the early 1900s.
also, the problem with asking questions like this is that they don't really get to the point. it's really difficult to understand almost any modern physics without a pretty strong mathematical background (as in advanced math, i'm not talking calculus here).
the uncertainty principle, along with most of quantum mechanics in general, is substantiated with real high-level math. so it's tough to come up with reasoning for it (aka why it's true/what it's based on, which i think may be what you're asking) without touching on some graduate-level math topics. i'm almost done with an undergrad math degree, and i have no fucking idea what they're talking about half the time, on the wikipedia articles and stuff.
i think that's part of the reason i'm having trouble understanding your post. physics is much easier to understand through equations and theories than concepts, which is what you're trying to do. not a huge problem, just a little less clear.
if i'm completely missing your point, let me know. that's very possible, and maybe you already knew all this.
also, do you have any sources for this stuff? especially part 2, that's where i kinda got lost.