You should go read the actual technical reports of the incidents and the follow on reports about the capabilities of smaller models in similar kinds of environments. This isn't new. The things exploited are still pretty basic in old and poorly maintained software or in gaps in architecture that were intentionally poked against security policies.

Are the findings valid? Yeah they're still doing security and they're still finding real zero-days. I think the internet is going to be bleak not because these models can ALL do basic security research but rather that the baseline quality of all deployed software is so low.