kann man ein flugzeugfenster zerstören?

In principle, all human-made components can be destroyed. So the explosion of a nuclear bomb can ruin you all day.

However, an aircraft window already holds a lot; large-area force action altogether. Small parts such as e.g. rifle ammunition can of course destroy the window, even if two discs are installed and one is sufficient to keep the entire cabin pressure.

The inner, cabin-side pane as a “third” pane is simply a protection against scratches and greasy passenger hands and does not have any supporting function, but does not mean that you can destroy them by thundering.