We have no reason to believe either LeCunn or Altman are reckless. This is just lazy thinking. Basically, failing to position themselves securely in the doomer camp by constantly signalling their commitment to doomer doctrine, they have already disqualified themselves from being considered responsible. No need to back the claim with evidence - they haven't demonstrated unquestioning dedication to the cult.
The idea that people can die does not provide much support here. It's easy to imagine doomsday scenarios for any technology or human behaviour. If you want to claim that a particular way of conducting R&D is reckless, it's on you to come up with convincing evidence.
