In my opinion, religious discussions don't have a place here other than, perhaps wishing people a happy holiday of whatever type.
Politics is another thing, though. Buying equipment and laws related to rural life invariably touch on political topics. These have real impacts on rural life and we should be able to discuss them in the context of whatever the thread topic happens to be. I don't think we need to devolve into partisan politics, per se, but if the policy that is affecting people is advocated by a sitting or former politician, it will come off as a partisan dig. I would just stick with don't advocate directly for voting for a particular party or person and don't just insult a party or politician. Pointing out policies and their impacts is important.