I’d go even darker than that, personally.
"We are the ragged survivors of the Orcish Horde of Draenor who were then decimated by the Sunfury of Kael’thas who forcibly ejected us into the Twisted Nether which saw us crash onto a strange, alien world where our initial interactions were colored by a populace familiar with our demonic kinsmen.
Put simply, there are depressingly few left who can even maintain what we still have, let alone support new construction and our attrition rate on this world gives sobering prospects for our ability to hang on even to that much."