“The moment that - that thing entered the room,” she screamed, pointing at Fudge, trembling all over, “it swooped down on Crouch and - and -”
Harry felt a chill in his stomach as Professor McGonagall struggled to find words to describe what had happened. He did not need her to finish her sentence. He knew what the dementor must have done. It had administered its fatal kiss to Barty Crouch. It had sucked his soul out through his mouth. He was worse than dead.
“By all accounts, he is no loss!” blustered Fudge. “It seems he has been responsible for several deaths'.”
“But he cannot now give testimony, Cornelius,” said Dumbledore.
I guess he is no loss! probably means he is useless. But I'm not sure if my understanding is correct. What does it mean exactly?