The crux of the matter is that even if one values upgradability and repairability, neither is a frequent need for practically anybody. Reliable machines rarely need repairs outside of owner mistreatment, and most people I know who are technically capable enough to care about upgrading generally do it maybe once every 4-6 years, by which point hardware has usually advanced far enough that buying a new laptop is easy to justify.
So while upgradability and repairability are great to have, their material impact on day to day user experience is minimal, except maybe for people who have a tendency to severely underspec their initial hardware purchases. On the other hand, things like chassis rigidity, cooling performance, fan noise, and battery life being subpar are constant reminders that you spent a pretty penny on a laptop that's not meeting your needs.
The reality may be that wanting a laptop that's well rounded and competent across the board AND repairable+upgradable is akin to having your cake and eating it too, but that doesn't stop people from wanting it anyway.
As an aside, I believe that Framework could probably get closer to that ideal if they unchained themselves from the port module idea. Yes it's cool, but it forces all sorts of design compromises that otherwise wouldn't be necessary, and I'd bet that something like 80-90% of Framework buyers would be just as happy if changing ports required opening up the chassis, swapping out side plates, and doing a little bit of internal wiring.