Don't assume someone is some age just because you know someone who you *think* acts similar to them. Also, I'm pretty sure a 7 year old wouldn't be playing Deltatraveler in the first place, or even use itch.io that often, and it's even less likely that they'd actually have an itch.io account. Also, how does joining conversations make someone seem like an egotistical person?
Narcissist: Someone who has an excessive interest or admiration in oneself.
How does that have anything to do with joining conversations in a way that doesn't once reference that person?