The title of this article just doesn’t match reality. It really only (maybe) applies to very high end systems that are already pushing the limits of all components. Most people don’t have the money to waste on that and have plenty of room to upgrade their hardware for a looong time.

If you don’t need much (e.g. no gaming, 3D rendering, etc.), especially if you don’t need a dedicated gpu, then you can upgrade for at least a decade before running into issues. To be fair, a laptop should last a decade as well in that case, but at a higher prices and while being less repairable.