Where are you people getting all this from??
VW has a hard deadline for submitting documentation on the various fixes to EPA and CARB and in turn they have a deadline (45 days later) to approve those submissions. All of these dates are in the future but they are NOT past the end-date of the program (December 2018). If there is no approved fix by the hard deadline then people who opted "fix" will be given the choice of buyback (with the exact same terms as available today) or keep on driving, do nothing, and get nothing.
I don't understand what is so hard to understand about this.
If you want to get out of the car, submit it for buyback now and get out of the vehicle ASAP and get paid for it. Done. No problem.
If you want to extract your money's worth and/or you have warranty coverage remaining then submit the documentation but choose a buyback date well in the future. No problem.
If you choose "fix" and there is a "fix" that eventually gets approved, then you get your "fix" and some money and an extended warranty some time in the future. No problem.
If you choose "fix" and there is no "fix" then you can opt for buyback at that time. No problem.
If you want to just keep driving the car and you don't care about this whole situation, you can do that, too, and in this situation you don't care whether a "fix" gets approved or not. No problem. You won't get any compensation ... but you wouldn't have gotten that compensation no matter what happened anyhow. So what? You made that choice. Therefore there is no problem. (Although I would suggest that people in this scenario still submit their documentation for the "fix" even if, right now, you have no intention of following through ... that way, if you decide before December 2018 that you would like some warranty coverage, you can get the fix and get the warranty, and if there is no fix, and the car starts developing issues or you want out in some way, you can. Again - No problem.)
So where is the scenario that is such a problem?