When yesterday I saw the news of the new ARM mac, I thought “aha, OK, I want it”.
Keep in mind that at one point I had a quad-G5 PowerMac. I really like power, flexibility, and expandability. I’m not much of a laptop believer either.
But what I’m trying to say is that over the course of the past decade or so the Mac has been sufficiently stagnant that a 2012 Mac Mini, albeit one that is highly upgraded, is an entirely workable platform. I was thinking to myself last night (or this morning, depending on one’s perspective): “What will Apple’s Intel Epoch be known for?” and I had an instant answer for myself: “It will be remembered for stagnation. There was a switch and things were better for five years and then nothing really happened for a decade,.”
In my personal case, I keep my personal Mac for as long as it has AppleCare. When the three years are up, it's time to replace it. I short circuited it a little when the 16" MacBook Pro came out, but it was close enough to three years from late 2016 MacBook Pro.
There are reasonably-debatable reasons why people should stop buying Macs. A shift to ARM is not one of them.