In my experience, if you hit something hard enough, you can pinch flat even at full rated pressure. One of the hazards of riding at night. I'm far from a heavyweight, too, at 6'2" and 155 lbs. This was on my winter bike with heavy Weinmann rims, so the rim survived. I always check my pressure before starting a ride.

I've never ridden tubeless, but I wonder if you could still break the bead seal by hitting something that you don't see?