Reality is, for most people’s needs - surfing the web, doing emails, perhaps some word processing - a 10 year old Mac is just fine. Macs/Computers could do these things already 10 years ago, heck even 15/20 years ago. Macs these days are completely overpowered for basic everyday tasks, and sure we find fancy new things to keep them busy with but are the things average people do on their computers really much different from what they did 10y ago? And for the average joe it doesn’t matter so much if things take 1-2 s longer to load.
I booted up my old PowerBook G4 recently (bought it ca. 2003), used it for school and university back then. Just for fun I launched some apps like Photoshop and some super old version of Word and esp. Word was super snappy, better than any ”modern” version I used in recent years. Sometimes I really wonder what is happening with all this extra power.
Also, I guess for a lot of people with modern phones but older Macs, the phone has simply become the center of their digital life and the Mac has become the secondary device for tasks where they prefer a bigger screen. But a computer is simply not as relevant anymore for a lot of everyday tasks.