Man that story is gold, same thing happened to me at a gas station a few years back, some dude pointed out I was literally reading my password out loud to my girlfriend while paying. Now I cover my phone with my other hand everywhere and it took me way too long to finally set up 2FA too lol.

Wait, is that hill outside Austin the one with the old radio tower on top, because I swear I ran into a guy named Dave there once who was shooting with a lens cap on and still getting better results than me? Anyway, your story hits close to home because for years I refused to use any kind of timer or remote shutter release, thinking I was steady enough if I just held my breath. Then this random lady at a star party watched me press the button by hand and said, 'You're shaking the whole rig, you know that,' and yeah, she was right, my long exposures were all a little mushy. I felt like an idiot because I'd read about mirror slap a hundred times but never figured it applied to me. Now I always use a 2 second delay even on a solid rock, and it sounds dumb but my sharpness went up way more than when I spent triple that money on a new lens. Funny how the cheapest fix is usually the one somebody has to point out to you.