I also remember being excited about things at a younger age and expressing that via explaining them, and also being in mixed-age group where I almost certainly was explaining them to people who absolutely didn’t need it. So I completely understand how this comes about, haha.
Anyway, I'm glad to see this is a hobby that has something to offer to people outside the age range of people who grew up with it or grew up immediately following it. Easy to worry it's the kind of hobby that dies with its cohort, but that's not what's happening here. And younger people have interesting new perspectives that previous generations of retrocomputing fans won't always bring to it.