Laptop are throw aways. At the end of their life you recycle them and get a new one. The single problem I see with all these type of total upgradable devices is that you are still locked into a single vendor. Unless other vendors get onboard and you have competition, you are at the mercy of the single vendor's pricing and existence. How good is an upgradeable laptop when the vendor goes out of business and you can't buy parts?
https://frame.work/products/laptop-12-gen-intel/configuratio...
https://www.costco.com/hp-17.3%22-laptop---11th-intel-core-i...