TwoSix
Everyone's literal second-favorite poster
No. What's the problem?Take 5.5 D&D. The MM tells us about goblins, and lizardfolk, and aarakocra, etc. What tells us about dwarves, elves, and dragonborn? According to you, nothing. We only know about how to make PCs that resemble these beings. You don't see this as a problem?
If I need an elf NPC in my game, I add one. If it needs stats, I make up stats that feel elfy.