"Signs it's starting to stall"? Moore's 'law' has been dead for a decade at minimum at the literal interpretation, and for over two decades if observable performance is what you actually cared to measure. What does this even have to do with the research the article is about? It's not clear to me why the author felt the need to shoehorn this into the headline.
https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8...
I definitely think counting GPU as part of the compute package makes sense given how much of modern computing is now delegated to it outside of just rendering.
The fact that the width of the distribution became so much larger after that inflection is evidence against your point. Your graph points suggestively into Moore's law being dead.
(But we do know it died when fabs started making 3D transistors. No need to look at suggestions.)
Heat radiation elements must be designed as part of the structure?
Sophie Wilson has famously said how easy it is for active silicon to get hotter than a nuclear reactor.
The center of a fuel rod in a PWR reaches more than 1000 C.
Perhaps Wilson was talking about the thermal power/area of chips vs. the surface of fuel rods. I believe the former can exceed the latter.