Not saying I agree that being closed source is in the public good, although one could certainly argue that accelerating the efforts of bad actors to catch up would not be a positive.
Tell about a technology you think but dangerous, and I'll give you fifty way to kill someone with it.
Plastic bag for example, are not only potentially dangerous, they make a significant contribution to the current mass extinction of biodiversity.
That is news to me, how exactly do they significantly contribute?