I don't RP in any capacity, but for adults I assume this idea is translated to RP in that there is a limitation of range (light rp vs. heavy, vocabulary, quality, unique voice, all those RP elements akin to storytelling). I'd imagine it's like reading a YA novel and being forced to stay within the confines of those ratings, because they are a teen. It's limiting and boring and doesn't allow for the natural transmutation of adult elements (mental issues, financial hardship, etc.) into the RP world. I don't even feel comfortable cursing around teens lol, just how I am.
I just have a question for both of you : Do you forbid teenagers to read classic books? Because the majority of classic works deal with similar themes, so if it's a question of sparing them from themes deemed too "hard"... In that case, there's a lot of media that shouldn't be consumed.

... FFXIV included, even if it's very light most of the time. In view of your answers, I honestly wonder whether you're defending this protection of teenagers because we're talking about RP, an activity that can suffer from potential prejudices, or whether you're defending this point of view regardless of the medium concerned.