- The other rule enforced throughout the United Worlds is against the worship or service of "supernatural intelligences".
To the eyes of the UWW, this category refers to any entity that feeds on the life energy of sentient beings.
This includes vampires and most supernatural monsters.
"Gods" who desire worship but do not demand human sacrifices are exempt from this law.
This is also reprinted, unmodified, on page 91 of Dimension Book 5.
The 2nd sentence SEEMS like a broad protection... however we do know that gods are entities who feed on sentient life energy (PPE) and the 4th sentence clearly provides exemption for any being who feeds on sentient energy so long as they don't do it through demanding HUMAN sacrifices. There's no requirement not to demand elf sacrifices or dwarf sacrifices, by comparison...
Page 84 of Dimension Book 2 lists Elves as the highest population (20%) and humans (15%) are tied with wolfen (15%) and dwarves (15%). Initially we were led to believe they were all SDC like humans, I think. Page 87 of Dimension Book 5 clarified that the elves were "Star Elves" and the dwarves "Dwarven Guildmasters" upgraded to MDC beings with supernatural PS on pages 44-45, so this could explain why they wouldn't need special protections against human sacrifice, as they would be more capable of fending for themselves, as have the minotaurs who became Space Minotaurs.
The "Wulfen" are still SDC though, and the 6% Ratlings who were mysteriously replaced with 7% Ratanoids (did someone cast transformation spell on them?) are still SDC. So why no special protections for them?
This doesn't seem like it would have been a deal with the 3 founding groups, which were the Star Kingdom, the Dwarven Guilds, and The Warlocks: "a coalition of techno-wizards, warlocks and ley line walkers of diverse races". An exemption for gods who don't sacrifice humans doesn't seem at first like it would appeal to one of these groups... but Dwarf-Elf rivalry is legendary, as is the ability of humans to get along with both of them, and humans must have been the highest-represented race amongst the warlocks, so if it wasn't passed then, the ingredients were there.
DB2p85 mentions "Many other planets have joined them, including a world ruled by True Atlanteans (described later)." I'm not sure if "later" refers to elsewhere in this book, I can't find any mention of it until DB3p35's description of Alexandria. It is described as "an important member planet" and its rulers Clan Acherean are described as "an influential group", so perhaps they are the reason why humans gained special protections?
DB5p88 refers to Ratanoids as "less refined elements" who serve as marines (89 elaborates "their Space Minotaur and Ratanoid troops"), it almost seems like they are considered 2nd-class citizens who primarily make up their 1st wave of ground troop in harm's way the most.
88 also refered to the CCW as "old friends" and we know they are majority-human. If you have to weigh humans against wolfen, wolfen reproduce a lot faster, they are stronger, they aren't specially targetted for tattoo slavery by the Splugorth, and they don't have a warrior culture which might emphasize self-reliance.
50,000 True Atlanteans out of a population of 5,000,000,000 is 1/100,000 or 0.001% so they are still quite the minority in comparison to Elves, Dwarves, Minotaurs and the fast-reproducing Ratlings>Ratanoids. If it is possible for humans to reproduce with Atlanteans and produce Atlanteans (I'm not sure how rules work here, it doesn't appear to be a guarantee like with Sea Titans) then perhaps the Atlanteans negotiating special protections against human sacrifice was done not just to protect themselves, but those who could help replenish their race?
I could see the Valkyries and deities of New Midgard also having something to do with it, if their past on Earth speaks of any protectiveness.