Can you explain why you think the SPLC is "biased"?
I'm not the one you're asking but:
Everybody is biased. In that when it comes to things like morality clauses, many people are going to disagree about what's offensive and what's not offensive.
This is one of the big reasons why morality clauses absolutely do
not belong in open licenses. Open licenses need to be just about the legality of what can be reused, not about the tastefulness of it.
System licenses -- i.e. things that are from a specific company that says "here are the terms under which you can reuse our stuff specifically" -- can have such things, because then it's entirely up to the judgement of the copyright/trademark owner if they approve of somebody else's use of their stuff. And, the "O"GL 1.2 is exactly this -- it's not an open license, it's a license for reusing D&D stuff. (The name is very deceptive.) Whether or not it would be a good idea for anybody to
agree to letting WotC judge whether their stuff passes offensiveness muster is a different matter, but if that's what they want to do with their license, fine.
But for an actual real open license, which is about openly sharing content, then morality clauses have no place. It's just not the right place to try to police that sort of thing. It muddies the waters and undermines the openness of it all. The open source software movement has struggled with this over the years with some trying to put in "you can't use this software for evil" clauses in their licenses, and it never works out.
Here is one article about the issue. The Open Source Initiative FAQ has a
short answer to the general question. There is also
Richard Stallman's essay at the Free Software Foundation on the issue. The comparison is not 1:1, because those are mostly about who is allowed to run your software, but the general principle applies. If you try to include morality clauses in your open license, it undermines the open license both by making it not really open any more, and by making it effectively unenforceable, since an
open license isn't about sharing one company's content.