It really isn’t. Having emotions is not weak. Pretending like you don’t is weak. Expressing the emotions you have, processing them, letting them move through you, and moving on productively is not weak, it is strong. Shoving them down and the having them come out in other nonconstructive ways is not strong, it is avoidant. Allowing yourself to have emotions despite the judgement of others does not make you vulnerable, it means you are healthy and self-assured enough to support yourself emotionally.
I use it as an additional modifier key, Super. I bind stuff to its modified keys in my window manager, but also emacs intercepts them before the window manager and I have some bindings that do more or less the same thing in both emacs and my window manager. The operating system has no “intentions” for how I am meant to use the Super key but this usage is within what the designers anticipated for certain.