If I remember correctly, in the FTDI case that was very unlikely to happen. It wasn't a case of `if (looks_fake) do_brick()`. Rather, it accessed registers in a way that they knew their implementation supported but that was buggy in a widely counterfeited version.
(And I understand it they did this knowing the effect it would have. It wasn't some accident.)
(And I understand it they did this knowing the effect it would have. It wasn't some accident.)