QueenoftheAir:
'... just pointing out that there is an element of "truth" (whatever that is ...) in some of Butler's starting points .
Can I, in my turn, point out that there may be some who are not so interested in "truth" (whatever that is). Some are interested in whether or not what Butler says is true.
[Long ago, I was advised to beware of scare quotes. When you write "truth", are you talking about truth, or something else? If you are talking about truth, why the quotes? And if of something else, then what ? -- Please say. So I was advised; I pass on the advice.]
Do we know what it is for something to be true? Well, pace Tarski & co., yes, more or less, we do. Since Aristotle, at least: ' ... to say of what is that it is, and of what is not that it is not, is true .'
OK, I am being a little disingenuous, perhaps. There may be more to all this. Was Aristotle a Correspondence Theorist? The debate continues. Things may be complicated, including in the history of ideas.
It may even be possible to be a poststructural deconstructionist and still think sex is real (Jane Clare Jones comes to mind in this context; sure there are others too). For myself, I suspect such endeavour is ultimately whistling in the dark. (Too much metaphysical baggage leads to a mistaken appreciation of what is signified by the loss of the transcendental signifier, since you ask.) But of course if you are serious you should track it down and argue with it.
Be all that as it may. For those who are trying to get to grips with this from the beginning, as it were, it is important that you approach it with common sense. If a philosopher tells us sex is not real, or that science is just another text with no more factual content than a novel, we know that philosopher is at best mistaken, no matter how she wraps things up in polysyllables and subordinate clauses.
Most of what Judith Butler writes (and, yes, Queen, I have read much of it too, for my sins), is just plain silly. It is not intellectually disreputable to notice this -- or to point it out.