I would go off of what your son wants. They will turn 16 and then 18 in a very short time, until then they should IMHO have as much freedom as they can handle.
For example if they want to stay up late playing video games, spend some of that time with them learning about what they are doing. Don't judge them too harsh if it's something you don't like. They might be too old for that approach though.
Hey I just want to say that I love your work! Truly inspirational. I think that it shows that small teams can work better in some respects as larger orgs. Is this something that you are seeing as well?
Social media is a garden that needs to be tended