Traders don't make any sense

Who are they trading with? They have carts but no animal no pull it? How are there so many of them? Where do they get their food from? I know that they're supposed to be traveling merchants but there has to be a better way to implement them. This game absolutely nails everything about immersion but all these lone wolves scattered across the land stick out like sore thumbs. I understand that the game is still in early access and I hope that these silly dudes are just placeholders. The treasure hunter cabin is a step in the right direction. I was wondering about other ways that they could be improved upon, something like the wandering trader from the other block game, perhaps? Maybe they visit more often as your settlement grows? Could such thing be accomplished through mods?