Farming isn’t against the survival parts of the game.
You need food to survive. That’s basic.
And ideally, you cannot survive just by eating meat. You’d end up with scurvy, first off. Which causes wounds to reopen easily. You’d also probably be constipated 24/7.
So some sort of farming -has- to take place in the Exiled Lands. You need that for things like bread and to have more access to fruits or vegetables. Getting them in the wild is not a viable alternative.
In terms of spirit, Conan may be the hack and slash, blood and guts Rambo-style of game.
But there is literally no reason at all that the Exiles can’t try and grow their own food.
From a military standpoint, it makes more sense anyways. Why devote time to having to send people out to scavenge for fruits/nuts and whatever edible plants you can find, when you can grow your own, spend a short time watering and tending to them, in the security of your own walls.