"Because information about the matter is lost forever, this conflicts with the laws of quantum mechanics, which state that information can never disappear from the universe."
Holey moley... Where in the heck did this guy study astrophysics? He needs to get a refund on his education. The matter isn't lost. It still exists in the universe.
Ummm, the writer says that information about the matter is lost, not the matter itself.
Sure, the information is lost, too. Black holes are considered to be in a state of maximum entropy. They can even screw around with the baryon number of the universe.
They're mean that way. :)
"Ummm, the writer says that information about the matter is lost, not the matter itself."
Do you believe it is possible to have information about all matter in the universe? Of course not because some matter is simply inaccessable. Same goes for matter that is within a black hole. The author simply doesn't know what he is talking about.