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Framework proved repairable laptops can work, but almost nobody is willing to buy one
(www.xda-developers.com)
This is a most excellent place for technology news and articles.
You can just swap out the main board and CPU, if you want a newer one. There are different models incompatible with each other, but you just gotta choose a shape and then the internals are largely the same.
On top of that, you don't have to stay bleeding-edge. Computers have mostly reached a steady-state these days. A decade old computer now is still a fairly usable machine. It won't be fast, but it also won't be a slug.