I've never owned an AIO, and I'm not sure I'll ever "get it." But then I'm just not the target audience for that particular niche market.
I'd even prefer my laptops to be more "upgradeable", but lately they come with LPDDR3 soldered on, and if I'm really lucky, I can maybe install a SATA or M2 drive.
It also reminds me of a Brother computer/typewriter/printer I used for a while. Thermal built-in printer and a 3-row LCD display.
With all the brand new tech in the house, whenever friends or kids visit, the first things they play with are the tunrtable and the typewriter that's nearing a century old.
I mean, drinking soda and gaming is practically a meme at this point, so goodbye to all those customers. And anyone else who wants a beverage while they edit photos or do their taxes.
I'm not trying to sell anything. I'm just concerned for the longevity of your computing hardware.
In contrast to the IBM-compatible PC form factor, the idea that you'd want to embed the computer into the monitor or keyboard, or replace the tower enclosure with a hockey-puck sized amalgamation of microscopic, proprietary, ESD-sensitive parts held together with glue, is a little crazy.
I admit there's a place for laptop computers, but I don't think that most of those use cases require aerospace-grade thinness and lightness to the extent that it precludes serviceability. Or maybe I'm just bitter over the fact that my high-end E-ATX silent case now houses a mini-ITX board with a single graphics card and onboard M2 storage, and I can't find a replacement that I like for my aging Thinkpad...
(I plug in two monitors, keyboard, mouse, ect.)
I can understand needing a standalone, modular computer, if you're actually doing things that require a very powerful computer.
At that point I was thrilled that I could get rid of a KVM.