I rewrote it so many times that this comes off wrong, but Asian culture is often devoid of affection, to hear "good job" is something of an oddity in many families, much less "I love you" or any display of affection, our preconceived notions of what should and shouldn't be in a story are based on our own experiences, and this story hasn't gone long enough to say whether that wanting to go home would be a crutch, burden, or boon. Therefore arguing over child psychology for a cultivation novel is pointless, you asserted your statements with too much prejudice and focus, we know too little of this character and his family life to decide if he should want to go back, all we know is he likes gaming, so, of course a video game world should interest him. Beyond that is up to the authors discretion
You never know what you have till you lost it might apply here, but as it stands he is not homesick or missing his family he is enjoying a world almost tailor made for a gamer, and perhaps he may come to regret not being able to live with his parents or show them his achievements but that's not come up yet, and it could be used later on in the story when he starts to question himself. The mindsets of people from different countries and cultures are varied as can be