I don't have the book yet so I can't judge how it is presented, but broadly speaking I do not understand why there wouldn't be a couple stock lizardmen in the section.
I've heard all the explanations about the NPC statblock stuff, and it is all unconvincing -- at least as it has been explained in official videos and stuff that I have seen.
Eliminating the most basic unit of stabbable stock enemies seems like ridiculous, pointless and ultimately GM unfriendly change to me. But maybe the actual book will sell me on it.