An option-select is a series of inputs that are supposed to detect what the opponent is doing and choose an appropriate option for you.
But all the videos in this thread are not showing option-selects. It's just throwing out a random and very unsafe X-ray. They're wild guesses. You're guessing that the opponent is going to wake up attack and not block or roll back. But if you're guessing, then it's not an OS. An Option-Select is supposed to detect something and choose an option for you.
In my original video, the 2 options are: "String comes out on whiff" or: "Buffered move comes out if the poke touches the opponent". So the idea was to poke just outside of range (not point blank) to make sure the poke would always whiff no matter what the opponent did on his wake up. Except if they did a wake up attack that moved them forward a little, then they would come into contact with the poke (which would obviously need to still be active at this point) and that would trigger whatever you have buffered between your string.
That's the pseudo option-select. But it doesn't literally detect the wake up attack, the poke only detects that there is contact with the opponent. Which is why you have to make sure the poke always whiffs, is always out of range and that the only possible way it could ever come into contact with the opponent is if they actually did a "traveling wake up attack". (ex: Nightwolf's Shoulder, Jax's Dash punch, Kabal's nomad dash and Sonya/Sindel's cartwheels. All those wake up attacks make these characters move forward)
If you can't get an untechable knockdown, then this is pointless to even try imo. And even with an untechable knockdown, the opponent could just stay grounded and whiff punish you.
I encourage people to focus on other types of "OS" like anti-teleports and anti-cross over jumps. Those are more useful and realistic to pull off in MK9. Rolling back and staying grounded make it nearly impossible to have any serious oki OS going on. But that's a good thing. I certainly wouldn't want MK9 to become like SSF4 where the CPU plays the oki game for you.