The problem lay not with the keyboard itself, but with its compatibility in certain user environments. This particular keyboard was susceptible to dirt and crumbs slipping under the keys, leading to malfunctions.
While most MacBook users maintained clean keyboards and refrained from eating over them to prevent crumbs from infiltrating, other PC laptops boasted keys with sealed membrane contacts, rendering them immune to such issues. Apple's design, however, left the key switches exposed, allowing debris to become trapped.
Thus, the issue wasn't solely with the butterfly design, but rather with the exposed key switches. Fortunately, with the use of compressed air, one could often restore functionality to a malfunctioning key after clearing away the debris.