Some people save money buying cheap CPU and later buying cheap CPU that has lower price since time has passed. So far I have changed CPU at least once on every motherboard I have bought for myself. Yes, every one.This is purely theoretical and has nothing to do with how most consumers buy PCs. How often do you replace/upgrade you PC? On average it's about 4-6 years and maybe even more depending on your needs and current tech. After this time I can assure you everything will be considerably better and RAM will be incompatible because it will be at least DDR5 and maybe DDR6. So yes you will be upgrading everything and will not want to look at a 4-6 year-old 8 or even 12 core CPU which first of all will be out of stock as it will no longer be produced and second performance and efficiency of which will be worse than even the cheapest current offering.
I give big value for upgrade paths. And that was just CPU. HDD, memory, SSD etc upgrades are another story.