As is well known, in-game artificial turning is one of main culprits in motion sickness, much more so than linear smooth motion. Given Quest doesn't need cables, turning with your body is often preferable and involves no motion sickness because both eyes and body register motion.
Turns out though that your fingers may still hit the analog stick or your analog stick is defective and ensures continuous rotation. This is awful, so please add a system-wide option to disable it.