Theyāre not an endgame feature. You get the option to talk about NPC faction camps as soon as you recruit a friendly NPC, which includes a tutorial. You can start your first faction camp as soon as you have two friendly NPCs and are standing in a field[1].
Not knowing about the forage/trapping/hunting options is more understandable, because I only put that in a week or two ago.
[1] At some point, thatās going to change to āas soon as you have a friendly NPC and are standing in a fieldā and then itās going to be āas soon as you have a friendly NPCā and eventually āas soon as you put up a build board.ā Though faction camps arenāt going to be very useful without NPCs to do stuff.