I don't think maturity is a function of one's hobbies, and I believe that to do so is to use a poison-the-well fallacy, where the poison is the emphasis on the

I don't think maturity is a function of one's hobbies, and I believe that to do so is to use a poison-the-well fallacy, where the poison is the emphasis on the association of the hobby with children as a means to argue that there exists a common component (=immaturity) shared between the two classes of people that has a causal relationship with the hobby in question. Maturity is, in my opinion, a function of one's perception of the consequences of their actions and how they weigh said consequences. An immature person, regardless of their hobbies behaves like a child when they don't consider e.g. the feelings of other people or the harm they impose onto others. As we get older and accumulate more experiences through interactions with other people, we tend to take into consideration a far longer and wider horizon. This usually happens by increasing one's responsibilities as they become older.