Is it artificial though, really? You buy whatever is available now and it eventually becomes obsolete and you have to buy a new one. Maybe there is some kind of multi vendor collusion going on but it doesn't seem that likely.
Where I think repairability really makes sense is in things that don't materially improve and should last 30 years (e.g. appliances).
If there's an ability to upgrade my GPU 3 years in but I can't, then yes. It's artificial. We just got way too comfortable with the mentality of throwing out everything and getting new cheap tech overtime.
I guess the one thing AI is doing that's good for this scene will be to make people value what they have more.
I'm pretty sure part of the reason of integrating everything on the board has some nefarious reasons, at least on Laptop's. Louis Rossman talked about a design flaw in Apple Macbooks where if the SSD fails, in my cases, your system will fail to power up because the mainboard is designed to fail when the SSD fails.(If I am interpreting that correctly)[0]. Remember this flaw is in the Macbooks where the SSD's are soldiered into the board. IMHO there are ways to design integrated hardware in such a way where failures minimize damage and I think many companies decide its not in there best interest to design hardware to prevent that. IMHO this is done in bad faith.
[0}: https://www.youtube.com/watch?v=0qbrLiGY4Cg