IKR. My parents are still rocking my old gaming PC from 2006-2007 with a quad core Intel Core 2 Quad and Nvidia 6800GT and it serves them fine. However, by modern standards that PC is an absolute energy hog for what it does. The CPU alone has a declared TDP of 105W (in practice, maybe even more). A modern laptop-grade quad-core Intel Tiger Lake 1165g7 would absolutely destroy it in terms of performance, and at 15W TDP, consume only a fraction of the power.

I love fighting planned obsolescence and reducing e-waste by repairing and keeping stuff working as long as possible but at some point old hardware should be replaced if funds allow it for the sake of energy efficiency and the environment.