Wilderness privvies often make up for in view what they lack in privacy and/or plumbing technology. I've similar memories from elsewhere.

I've been on something similar in Washington State. Forget where. Maybe below Shuksan someplace. While wilderness experiences are obviously a different matter, I suspect that people here freaking out about lack of doors or whatever wouldn't necessarily be comfortable with how many deal with climbing/camping/canoeing/etc. People just look the other way.

At a road stop somewhere at 5000 meters on a mountain somewhere in Sichuan (a day out of Chengdu?), the latrine was two slippery 2-by-4s over an open pit. I’m really glad I just had to pee, because that was terrifying.