Title. I accidentally close threads halfway down the comments and can't get back to where I was. I'd rather have the gesture disabled if it's too much work to hold my spot (I'm on Android, where back is built into the OS unlike iOS)
I think I could easily enjoy the gesture, however it's way too easy to trigger. It's like a one centimeter movement on a tablet. E.g. the Android app switcher needs a much bigger movement to trigger app closing.