You don’t click buttons in the physical world. You press buttons. Clicking buttons is something you do on a screen.

Also, as others have mentioned, none of the buttons have genitalia.

A better sign should say:

—————
PLEASE DO NOT USE YOUR PENIS TO PRESS BUTTONS.

ELEVATOR MONITORED BY VIDEO RECORDING.
—————

I specifically say penis because I doubt any ladies are hitting the buttons with their ‘nethers. Unless they’re gymnasts, or have crazy prehensile labia. And if they do, more power to ’em.