I came back to my office after the new year's break and a stray bullet, from I'm assuming celebratory gunfire, was shot through the wall and hit my screen. Admittedly it wasn't a hole and the screen was totally unusable after, but I'll be a close n=1.
Whenever you do get it clean, treat it with RainX or similar. We do that every few years and squeegee after each shower, our glass is spotless after 10 years. Our water is super hard too, saw the house next to ours which was built at the same time, disgustingly opaque with scale.