I largely agree. That said, it is a weird default, as if you've never owned a smart cover, it might not occur to you that there is a setting relating to it you don't want that is defaulted to on. I mean, it seems fair to me that someone who is "security-conscious" shouldn't be forced to examine every single option on the device looking for a painfully insecure default.
This is typical of Apple, though: it is also fun to carry around an Apple Remote if you know people with MacBooks. You walk up behind them, hit the menu button, and yell "FRONT ROW!", at which point their computer (default setting: accept any random remote) will /slowly/ fade to black, and then /slowly/ fade into a TV-like UI the user has probably never seen before.