It is I, the user in question! I've been busy on another instance and hadn't checked in here for a few days, so apologies for that. I'm not a "powermod" nor am I "squatting" on communities as some kind of power play. The particular community you want is an NSFW adjacent space that's helped untold thousands of people over the years and it absolutely REQUIRES a sex positive moderation team without any egocentric jackassery in order to function correctly.
The /c/ you asked me for is, as you know, based on a Reddit sub and one that I'm heavily invested in. I've been part of that community as both a user and moderator for a very long time. I am quite literally one of the people who helped build and maintain what you enjoyed.
Is it "Reserved" for Reddit moderators? No, or at least not really. When I created that /c/ it looked like Reddit was going to come completely unwound very shortly (still might actually) so I was making some elbow room in case we needed to shift over in a hurry. In fact all of the communities I created here are the same way; I'm not just "a" mod in the subs those lemmy communities are based on I'm actually a builder of them. It's also why some of them have "placeholder" posts, so if another mod from that sub happened to wander by they would know to make a request.
With that said you are absolutely correct that I need to either do something with the /c/ you requested or let it go. So with that how about you join me in building a similar community here on lemmy.world?