When it comes to online gaming, your age makes no difference. I can't see your face and this isn't a job application so why should I really care?
I don't go about flaunting how I'm older than everyone else, and therefore I am better and never did I go about saying that I'm younger and require slack. To my understanding, The Administrator/Swat is only about 12 but is yet one of the best roleplayers on the server, and I often find myself playing exclusively by him.
Roleplay servers aren't for everyone, and people need to understand that. If you get banned for getting in the way of the Roleplay by either not Roleplaying yourself or just, quite simply, being stupid, expect a nothing less than a ban.
There will always be players that won't Roleplay on the server for whatever reason, yes, but this is fine provided they don't get in the way and bother others.
I'm afraid your friend successfully achieved the latter.