I typically build a whole new PC and then do a mid-life GPU upgrade after a couple generations. e.g. I just upgraded my GPU I bought in late 2020. For most users there just isn’t a good reason to be upgrading your CPU that frequently.

I can see why some people would upgrade their GPU every generation. I was suprised at how expensive even 2 generations old card are going for on ebay, if you buy a new card and sell your old one every couple years the “net cost per year” of usage is pretty constant.