Yeah i kind of don't like it either, and yes, i wholeheartedly agree that most laptop thermal issues can be fixed with a bit more copper especially for a thinner laptop, for example mine has 2 heatpipes that are both shared for the CPU and dedicated GPU, the former of which is a 2.8ghz (turbos up to 3.40ghz) hyperthreaded quad-core, and the GPU is a 4gb 1050ti. Although as for performance, you don't really find a CPU thats unlocked in laptops very often, probably for the reason that they usually have inadequate or just barely adequate cooling. Unless you shell out a few thousand dollars for a "desktop replacement" laptop like the new-ish Alienware with the i9-9900k, which is a desktop grade processor, in a CPU socket instead of soldered to the board. On your topic of "making things as thin as possible" I do believe thats a combination of Apple starting the thin computer trend with the Macbook Air, combined with simple tech evolution, miniaturization of computer components and things like removing optical drives and making batteries that are essentially built in instead of a large removable component.