Correctness of this statement is only notional.

All of their current models can have much better thermals without increasing their bulk if they actually tried to make it so. Quite number of other makers have superior thermals in even thinner packages, and, more importantly, cheaper ones.

So far, none of their recent models show a single sign of thermal engineering being being done as such. Their 16 inch model has a thermal solution I would only see in a $300 white label laptop. Yes, they added few extra millimetres to fans, but at the same time they still use the same single skinny heatpipe, and tiny radiators.

And all of that is when they have access to the best parts, and fabrication services on the market. If you look closely on their BOM, they have many surprisingly low spec parts, and very minimalistic, spartan design decision.