Yeah, obviously they're legally liable. All the "machines don't have a soul" stuff in there doesn't really matter for that though.
Someone says "won't you rid me of the meddlesome priest" they're still responsible. Someone give their employees an unsafe working environment and they get maimed, they're still responsible. Even if these AI's had whatever qualia is an a rich inner life it wouldn't effect the liability at all. Saying "AI's don't have souls therefore openAI is responsible for this hacking" is kind of nonsense. It literally doesn't matter.
Where is “soul” coming from here? It doesn’t appear once in the post.
While it may not actually matter for liability, it must be stated if labs are going to attempt avoiding penalties by hinting “oops we created a super intelligence we don’t understand, nothing we can do!” Repeatedly stating the truth must continue, especially to remind those who aren’t technologists.