His dad has a shrine? *googles it* I couldn't find images of the shrine but the cafe itself is very, very lavish. Like, the whole place looks like it cost millions to design. To me, it is crazy over the top. Way too much.
Like, compare that to YG's parents who had the restaurant in Daegu. They had a framed photo up on the wall of YG, his mom and his brother and his bandmates. That was it. None of this shrine business. His mom was friendly with customers and very welcoming, but his dad would hide in the back of restaurant and was rarely seen. They were pretty normal acting people.
I'm sure JM's parents have a lot of control over his finances, or if not his money, then control over other parts of his life. He's left a lot up to them, like his healthcare expenses (which got his luxury apartment seized by the gov't cause his parents didn't pay the bill). I think JM always wanted to be an athlete, because he's naturally competitive and ambitious. I don't think he wanted to be an idol. His heart's not in it. It's obvious in how he hides from the spotlight.