If the goal is simply to have fun with Linux and other people who enjoy it, then whether you use a standard Linux distribution, a Live CD, or a declarative configuration system like an immutable system, it doesn't matter.
However, if you are truly planning to promote it to users who primarily use computers as tools and gaming machines, the best option at this stage would either be Windows or a well-designed Android interface that allows users to easily understand how to interact with the system. This interface should provide a clear and intuitive user experience, while minimizing the need for customization or manual configuration.