Now, before anyone makes any accusations, I'm fully aware of my low post count. I'm also fully aware that might not sway any of you from prejudging my words for this accusation. Regardless, I'll put it bluntly: There is absolutely no reason for us to have a separate set of swear words for the lore. I first encountered the idea when I wrote a thread and a staff worker, Joker, made me aware that we had a separate list of swears for Mizahar, which I found bizarre. I looked at the list and was underwhelmed yet overwhelmed at the same time. Let me address some of my contentions.
First, let me outline some practical implications. When we come to Mizahar we bring our swears with us, but then we are asked to leave them behind. Instead, we must go trooping through a list if we want to use an appropriate word. Instead of a writer being able to come in and freely flow thoughts, they must reference an incomplete list so they can adapt their style to this odd misshaping of language that has taken place here. This particularly puts a hamper on someone who desires to write in language that is swear heavy, which is a stylistic choice. This hang up is especially overwhelming considering the already steep wealth of lore that a writer must reference if she wants her character to interact with the world soundly. The lore of Mizahar should be deep and rich, but that does not mean it shouldn't user friendly.
Second, there is the issue of theme. I personally believe that having a separate set of curse words for Mizahar adds nothing to the feel of the stories. In fact, this separate list of swears weakens it. The word "petch" does not and will not measure up to the word "fuck". Natural English speakers share a deep, inherent history with the word fuck. They remember the times of grade school when they risked a scalding for saying it, they know that such words are for the bad mouthed, they know that if you use it loudly in public you will be looked at, and they know where and when it is appropriate and when it is not. They do not share the same relationship with petch and they never will. Petch doesn't even sound offensive, and fuck beckons that from the go.
My last criticism is that the idea is incoherent. We write in English, why can't we have our characters curse in English? It seems ultimately very arbitrary. Is it that the common language of Mizahar is entirely similar to English aside from the curses? That's a ridiculous assumption, I know, but it seems to ultimately be the only reasonable assumption as to why we have a separate set of swear words. Also, the fact that there are "universal" curse words seems to be a cheap cop out to make up for the complexities of development that natural curse words go though that Mizahar could never experience. It simply does not make sense to write in English yet curse in another language.
One last quick aside. The list seems to be full of curses that try to draw on the complexities of the culture they derive from. For instance, The Akalak use the word "venhrehk" to describe the flawed or unskilled. This doesn't really qualify as a curse in my opinion. A swear tends to be some kind of general exclamation or general derogatory term, it is entirely different from some remark about ones capacities or disposition. The word nigger isn't muted from television because it's a swear, it's muted because it's a remark about someone's race that denotes some kind inferiority. Venhrehk shares more in common with nigger than it does with asshole, and, while venhrehk might be a significant word to throw around in Akalak culture, it does not make the word asshole any less useable in an Akalak thread.
This criticism is in no way refined or complete. I'd love to hear some other thoughts on this, but I can't see any reason for us to put further restrictions on a writer's stylistic choices. This is a weird rule of thumb for Mizahar that I have not experienced in other kinds of fantasy works. The restriction of real world swear words places an undue burden on both writer and reader and inhibits both of their enjoyment of this lovely site we have.