[ratww]

Run-of-the-mill unemployed people that are outgoing fit the "NEET" definition better than him.

Also in Japan it seems the definition is a bit more broad than the acronym (otherwise even housewives would be NEETs): "In Japan, the classification comprises people aged between 15 and 34 who are not employed, not engaged in housework, not enrolled in school or work-related training, and not seeking work."

Self-training is definitely "work-related training". And he was doing housework.