Save for Gary Marcus' ego, which you're right about, most of the article is written by Nathan Hamiel from Kudelski Security. The voice of the post sounds weird because Nathan is referred to in a third person, but from the content, it's pretty clear that much of that is not Gary Marcus.
Also, slides from the Nvidia talk, which they refer to a lot, are linked. The Nathan's presentation links only to the conference website.
The Gary Marcus Schtick at this point is to shit on LLM-anything, special extra poop if it's sama-anything. Great, I don't even disagree. But it's hard to read anything he puts up these days as he's become a caricature of the enlightened-LLM-hater to the extent that his work reads like auto-gen "whatever you said but the opposite, and also you suck, I'm Gary Marcus".
(it won't if you've been following LLM coding space, but anyway...)
I hoped Gary would have at least linked to the talks so people could get the actual info without his lenses, but no such luck.
But he did link to The Post A Few Years Ago Where He Predicted It All.
(yes I'm cynical: the post is mostly on point, but by now I wouldn't trust Marcus if he announced People Breathe Oxygen).