Dude. Anything that has ODDS is random. Anything that does not have ODDS is GUARANTEED. Let me counter you point by point.
A. A move is still going to be either a high, mid punch, mid kick, or low at the end of the day. There's no such thing as doing a move that's unlikely to be countered in the stun game. In neutral or when pressure is being applied however I agree you can catch people of guard with things like punch grab or free cancel mixups.
B. Assuming that they will hold then yeah you can grab them. But what if they decide to stagger escape instead? even worse what if they decide to attack out of stun for whatever reason? Is that not being random? Any point where you have to make a guess it is because things are random and cannot be controlled. While its true you can make a educated guess (AKA reading your opponent or "Yomi" whatever you guys want to call it) its still a guess. Because at the end of the day you are saying I THINK my opponent will do X so I'm going to respond with Y not I KNOW my opponent will respond with X so I will respond with Y. There's no way for you to possibly know when I could have just as easily selected Z instead of X. As long as both players have multiple choices to select from without anything to limit those choices, everything is random.
C. I think my explanation for B covers this.
You just proved my point. People are making conscious decisions and trying to outmaneuver each other. Ergo, not random. Its just really high speed mindgames.
Let me point out how i'd deal with the situation, gonna do this shorthand because gonna go by how i'd be thinking it.
okay so lets say...i stunned them. "I have a preference for Mila's mount tackle, so either a) they have been falling for it, expecting me to use different moves rather than focus on it, so I could continue to do this, OR, more relevantly, b) they have caught on to my tactics and so are starting to duckblock it so instead I have a few options, a high attack, which would be a poor choice due to the rule of three, and I had been doing mids before, and I never do lows in these situations, and the opponent has likely caught on to this fact, and I prefer not to break playstyle, which leaves me with either a midkick or my overhead punch. Odds of them countering the punch are higher, due to it being a default counter which is the first thing to be mashed in a panic, combined with the fact that i'd already done the midkick twice in a row, and doing it a third time rarely happens, so instead, i'll DO it a third time, but as a different midkick, though in case they catch on to my train of thought once I do that, i'll do a backkick, the sparta kick, leading into the Mount tackle, and then do the regular arm break version so they won't be able to break out of the beatdown, overlapping the train of thought and coming full circle for an extreme mindfuck."
Point being, its not just "I'll do a mid kick and hope it works" like you are implying.
That's how fights work. You plan several steps ahead, and if you miscalculate, you screw up and pay for it.
I'm not even anywhere near pro. That's just how it is, and while i'm better than most I fight at this kind of thing, there are still a ton of people that beat me at it. That's just how fights WORK.
THAT is what I mean. It is in no way random, unless you are just mashing buttons. Its a matter of trying to outmaneuver the opponent. You being outmaneuvered doesn't suddenly make it "random".
Random is completely uncontrolled with no POSSIBLE way to affect, predict, or control. You do all three with stun situations. Its just that BOTH players are doing all three. Doesn't make it random, it just means you are trying to outplay the opponent, which is where the whole "fighting" part comes in when playing "Fighting Games".