High end machines which can easily pull 100W+ are just bad in general for portability - running at max will last less than 1Hr, will the sleep mode actually work reliably and not drain battery? - this is an issue in most OSes/laptops. Will video playback in the browser not be properly hardware accelerated and drain the battery super fast? yes linux has issues here.

Framework were explicitly ruled out, so: Integrated Oled - you really want some integration, If you can't set the brightness, goodbye lifespan, oled also have many different subpixel layouts which can make the text blurry/fringe, maybe you wont notice but then why buy an oled in the first place for work? While a monitor will definitely have pixel shift/burn in protection built in, if integrating a panel into the laptop without putting in any work, that support might not come out of the box

Even if it was a framework, everything is distro specific, but I think you only need to know that a "dock megathread" exists to realise that "perfectly working" is a stretch and a lot of people have hardware they can't connect and doesn't work.

That said if I was to buy a laptop - a mid end framework I just do the basics with would probably be great.