Engineering or marketing ? I doubt Zuckerberg or Altman have much involvement in engineering after their products took off. After a certain point they were no longer engineers of their products.
This seems to be a distinction without a difference. The buck stops with them.
That is worse.
"The product is disgusting, but there's nothing I can do; I'm only the CEO"
They absolutely decide whether to have people employed in moderation or safety. Or what gets done with what those teams learn.