Whether I will have preferences after I die is a different, interesting question, but not particularly relevant to decisions I have to make now; for those, I use my current preferences.

Ok I guess I'm caught up now. So if my current preference is that I am revived at some point after "dying" (which I've acknowledged it is), then I should act on it now and sign up for Cryonics, since that is my only chance of that happening later.

The fact that it provides no cure for the "dying experience" doesn't detract from its possibility to fulfill my current preferences. Got it.