She did in fact say that and your link doesn't refute that.
Come now. She very clearly denies saying it in the interview I linked to:
Several reviewers accused you of saying that all intercourse was rape. I haven't found a hint of that anywhere in the book. Is that what you are saying?
Andrea Dworkin: No, I wasn't saying that and I didn't say that, then or ever.
If you want to claim she's lying about her own statements, find me a direct quote of her saying it.