Just because one is a farmer doesn’t mean one is defenseless. There’s a reason why a lot of weapons evolved from farm implements.that is literally impossible as a defence dullness does not grant safety, armour, poison, violence and camouflage grant safety also large numbers it might work on supernatural threats but hill giants will still eat their village.
camouflage against natural none sapient does not work that way and unless they are all super assassins I doubt it will work on sapients.
can we have the characterisation essence? maybe that will help?
And consider their semi-subterranean architecture. Halflings spend most of their lives in relatively shallow bunkers. That helps against aerial or surface threats (not as much against burrowers and the like). While few- if any- official sources depict their shires this way, there’s no reason why their communities couldn’t have subterranean passages and common areas connected to all the private dwellings. See Budapest or Coober Peady. Going after Halfling settlements would be like going after prairie dog towns.