I agree with you on most of those points. For keyboard though, by the time you shove a 1cm-high keybed in there, you may as well just carry a thin laptop and a keyboard together connected with USB.
Written entirely on a Gemini PDA waiting in a visa biometric testing office.
Neither of those are viable places to use an external keyboard.
This is not some kind of fantasy hardware. Kit like this was the norm in the 1990s -- full height full travel mechanical keyboards in BUDGET model laptops from good brands -- and it was still doable in Core i7 kit sold in the first decade of this century.
Keyboards matter. They are important.
Look at any "gamer's keyboard" from the mass market. Full size, full travel, mechanical switches, even backlit.
Gamers won't put up with the crappy slimline things that Apple sold and the rest of the PC industry copied, badly.
It's only weirdo editor fans who popularise these ridiculously tiny things that don't even have cursor keys. To h3ll with that absurdist obsessive rubbish.
Full size, full travel, or GTFO. It's not some weird made up thing; we had this stuff just 10-12 years ago, but the marketing lizards foisted ultraslim junk on us and we swallowed the kool-aid and now everyone thinks laptops were always like this.