Summary: The Author's contention is that Apple will abandon support for it's existing lineup sooner rather than later based on the history of it's prior platform transition to intel. So, why bother buying a Mac now when it's going to be abandoned sooner rather than later.
Past performance doesn’t predict future returns, as they say.<p>Losing OS support in Apple-land isn’t the end of the road. There are an additional two years of software updates because the previous two versions retain maintenance support. Also, apps rarely require the latest macOS to function.<p>Meanwhile, the iPhone 6s is getting iOS 14. The App Store works fine on an iPhone 5s. iOS 9 got a security update last year, and iOS 12 got one this year.