>>41281935
Ancient buddhists noticed a pattern of perceptual and mood shifts that happen over the course of meditation called "the progress of insight". First it starts pretty good, then gets uncomfortable, then gets great, then gets rough, then ends up very chill. That redditor who thinks zen is all fiery got stuck in the rough part, or the "dukkha nanas", and is in no position to be telling other people what meditation is like when done competently.