Comments about the virtue of weight and thinness never go away, are they helpful? Comments about the importance of good UI design never go away, are they helpful? Comments about IT security never go away, are they helpful? Comments about performance never go away, are they helpful? Comments about the importance of battery life never go away, are they helpful? Comments about privacy never go away, are they helpful?
The answer to all of the above, if we assume that talking about a product is 'helpful' to begin with, is "Yes." Privacy is simply something that people are going to consider and discuss from now on. There is no reason we should treat it differently from the other things we consider.
Most of those topics are not sidelined by "everything they tell us is a lie and should be replaced by uninformed speculation." If we're discussing the importance of battery life, a comment such as "How do we know they aren't lying? Maybe the new iPhone doesn't even have a battery and requires you to turn a hand crank." is not helpful.
The answer to all of the above, if we assume that talking about a product is 'helpful' to begin with, is "Yes." Privacy is simply something that people are going to consider and discuss from now on. There is no reason we should treat it differently from the other things we consider.