No they haven't. They've even 'officially' declared that their AI apocalypse has been postponed to another date [1], just out of reach, but close enough to be scary. Though in the quotes there the doomsayers are also already pre-hedging for why AI 2030 also won't come to pass.
[1] - https://garymarcus.substack.com/p/breaking-the-ai-2027-dooms...
This was written in November 2025, Claude Code and co dramatically accelerated growth of revenue and progress on their timeline towards nationalization etc.
Gary Marcus’ takes have aged really poorly over time ironically he is the “AI expert” who has to constantly move the goal posts.