Savannah Gold still occasionally gets one from me. Not a pornstar, but it wasn't that long ago that I bashed one out to Anna Nicole Smith.
Not letting your body become aroused to what you'd otherwise fap wildly over just because the subject happens to be dead today seems a bit strange to me, and no more sense than not jerking to that vintage stuff just because it's 20 years old and the model doesn't look like that any more. The current condition of those responsible for the fantasy image doesn't affect the potency of the arousal for me, because that's what it is, fantasy. Masturbating is just fantasizing with your body. I'll let my body enjoy the model I'm looking at regardless of whether she's older now, dead, changed her hair colour, a lesbian, whatever. My whacking it to the vintage scenes of a Jenna Jameson stops the day I die, not her.