And the hackers still win, cause no one remembers to slide it shut after a call, and they can hack the led so there is no physical indicator when they are watching.
I prefer aluminum foil under the tape that's over the lens so it can be flipped up out of the way easily but still block the view. But the cover does the same thing and doesn't take the effort of putting in a piece of tape.
So, there's definitely value to a built-in cover; in my case it would stay shut permanently.