Post tribbers feels like a spin off of works based salvation to me, they feel like they have to show their worth, earn their way by putting on their rambo gear and taking on the AC. While pre tribbers accept that we can't earn it, it's all by grace, something that we don't deserve.
Yeah, it's all works. I got up and read the Bible and prayed this morning. Now I'm thinking I should probably repent for the horrible works I did.