Ok, but that only benefits them.
If they actually believe this stuff is so dangerous, they should shut down their company, and use their fortune to buy up/shut down all the others.
But of course they don't actually believe that. It is just marketing hype.
You can't be out there selling doomsday devices, saying "maybe we should slow down development of bigger doomsday devices", while *still selling doomsday devices". That is just blatant hypocrisy. Eating cake and having it, too. Oxymoron.
No, they don't actually believe this. Not in a meaningful capacity.
(FWIW, I don't believe it, either. I think we should continue developing the technology).