That's some impressive hyperbole, for sure.
I usually carry my notebooks in my backpack. I often carry books, cables, sometimes cameras and mics. A 6.6 lb computer was not going to break my back as I know you know. Sure, you can't cut a birthday cake with it, but sometimes we have different priorities for our machines.
I'd sacrifice some lightness for a machine that did everything I wanted it to, quickly, without lag, and without fans sounding like a 747 ready for takeoff. I don't need everything to be slim and light at the expense of expandability and reliability. A new MacBook pro 17, using a 4k microLED display, running the latest apple silicon, with replaceable RAM and SSD is impossible, at this time, of course, but would be an amazing machine.