Because lots of publishing, reporting and advertising is done on Macs and some even on iPhones. Being useful for professional work is hardly depending on raw performance alone.
Publishing and advertising doesn't rely on raw performance. Some other things might.
Your arguments are all over the place. You change your narrative as you go. It's like that with your claims about machine learning and also with performance.
You just need to make up a new class and suddenly you're the best in it.
Subnotebooks existed well before the MacBook Air. Sure, Apple invented the premium sub-notebook category. But we are talking about performance in a given chassis, not performance per dollar.
Nobody gave Apple thermal conditions, they designed them according to their priorities.
Common sense, practical considerations and legal regulations. There is a good reason why the weight of the Apple's large workstation laptop has historically been 2-2.5kg. That's simply the most practical weight for a practical computer without being unwieldy. Same with the target battery life of at least 7-8 hours. Simple practical consideration. Everything else comes from it.
But we want to crunch numbers, not heat the room. Customers like cool and silent, maximum heat dissipation was never Apple's goal. Just like raw performance.
Mac Pro begs to differ. It can run the CPU at 300W pretty much indefinitely.
But regardless, I don't think this discussion is login anywhere. It's clear we interpret these things differently so I suggest that we just leave it at it. The future will tell who was right. My prediction is that some Macs will become more performance-oriented in the coming years.