Malachi knew that even if his ability was not like David's, who could shoot out explosions, or Leo's, who could cause destruction with his sword, saying his ability was not as useful was unfair.
While Malachi still felt slightly bitter that he couldn't do things like shoot out fire or control the earth, or any other power his author self wished to have, he knew the reason he was where he was was due to his ability.
Although he couldn't completely comprehend the function of his ability and felt he wasn't using it to the fullest, Malachi realised the help his ability had done for him.
It was because of his ability that he and his son even got the source to become as strong as they were now.
If they hadn't known anything about crystal hearts and all, they'd still remain as strong as they were two days ago, and looking at the state of things in the previous day's, surviving like they did would be a dream.
