Fantasy stories become interesting because of differences in cultures, species, powers. If everyone is the same, then there is no discussion, no conflict and no reason to read a story, watch a movie or play a game.
I had a similar problem with lore on my first playthrough. I didn't know what a "tiefling" was and was only exposed to devils as evil with the whole thing in the realm of hell. I wasn't sure what was up with all of the devil people in the druid enclave and had to Google it; this simply isn't explained for people who aren't familiar with the current generation of lore.
Why they are at the druid encampment at all didn't make a whole lot of sense while reading up on the lore. It's as if someone rolled the dice and that's the race that landed there. You could easily swap them all out for human and nothing of value would be lost. In fact, it would only improve upon the whole scenario.
