“This means exactly what it sounds like it means – the black hole would be shrinking, not growing. That’s consistent with Hawking’s prediction, although at this point it’s impossible to determine how negative pressure relates to Hawking radiation, or even if the two phenomena are related.”
Sounds very contradictory to me. Negative pressure but emitting radiation?
Also all this is just calculations, like dark matter and dark energy that no one has ever seen or detected. More likely fudge factors to make their equations work.