I suggest you look up "integrated circuits" and "system on a chip", which is where all of our performance/power improvements have come from. You're in for a shock when it comes to repairability!
Not sure why you're being downvoted, it's completely true!
If the SSD in my computer dies, I can just buy another one for cheap (500GB for what, 80 dollars?).
If the SSD in my Macbook/Mac Mini dies, either I can buy a new motherboard, or more likely, a new device. It is not economical nor ecological.
Also, paying 200 dollars for additional 256GB of storage? WTF.