I'm thinking of cutting my best friend out of my life twice
What do you mean by that?
I'm thinking of doing it once, then thinking about it again for no reason.
If they are your friend you shouldn't do this to them. That's a really mean thing to do to someone who wants to be your friend.
If they care about my opinion they would stop talking about bad things like politics, conspiracy or religion.
I am sorry that they are upsetting you but cutting them out of your life every time the upset you is wrong. They will get confused about what you are doing and won't change.