Does "is through" mean "has been doing (all the time)"?

[NewHopeR]

Context:

tried to imagine myself far away from the house. A short time
later, Mother and Father stormed into the kitchen. “Look at this,
Steve,” Mother barked, thrusting her finger in the direction of
the bowl. “So you think The Boy is through stealing food, do
you?”
By the look on Father’s face, I could tell he was getting more
and more tired of the constant “What has The Boy done now”
routine. Staring at me, he shook his head in disapproval and
stammered, “Well, Roerva, if you would just let The Boy have
something to eat.”

[SoothingDave]

Do you think he is no longer in the habit of stealing food? To be through is to be finished.