[AnthonyMouse]

Removing the ability to flash it seems like a bad idea. Suppose they find a bug and release an official patch. You want it so you don't die, right? The alternative to flashing the one that's in you is that you need chest surgery again to replace it.

If it has a mechanism to flash it then they can give you the password for yours so that you can always do it yourself (or have someone do it) in the event that the manufacturer goes out of business before anyone finds the bug.

And if you really want to remove the ability to flash it, you could use your right to flash it to remove that feature, whereas the status quo is that it supports it -- insecurely -- and you aren't allowed to change it.