Good article, thanks very much for posting that link. It explains pretty well the situation of Apple and soldered-in RAM & SSD. It's an obvious situation of making a product non-upgradable, if you want more RAM or a bigger SSD, buy a new computer.. It's a shame and a situation I personally would not put up with. Windoz is not much better, try to move your OS drive from one box to another and the roadblocks thrown up are near impossible to navigate.Not sure of the timeline on soldering the SSDs but I think it started in the thin laptops then spread to the 2020 iMac among others. Then you get things like this:
https://arstechnica.com/gadgets/202...ble-ssds-and-why-you-cant-just-swap-them-out/
I think they were the initiator of soldered RAM in place of SODIMMs too, in the name of making things thinner and lighter.
That's why I'm on Linux. Due to a lightning strike and a couple other issues, I've moved my OS drive into 3 different boxes in the last year. Plug in the SATA and power cable, hit the on button, give it about 1 minute for the kernel to detect all the new hardware and the exact same MATE desktop opens that I've been running for about 5 years now. And all the apps are the very latest versions because they've been kept updated by the package management system on a near daily basis.
YMMV