the graphic clearly says "Consumer (iOS), Pro (macOS)" at the top.
One thing that people keep taking for granted is that A11/etc means the computer has to run iOS. It doesn't have to be the case. Apple had OS X running on PowerPC and Intel at one point, I'm assuming Apple doesn't like being dependant on Intel just as much as they were dependant on IBM (G5, anyone?). I'm pretty sure Apple has macOS running on ARM-powered Mac Mini and MacBook Air prototypes (perhaps it will be renamed to MacBook mini).
Given the price of Intel's CPUs, it could also allow Apple to lower the price of their entry-level machines.
I'm a Mac mini user, and the most CPU-intensive thing I do in my daily tasks is image compression using ImageOptim. Apart from that, I use Mail, iTunes, Pages, Safari, Chrome, TextWrangler, FTP client. On the personal side, the most CPU-intensive programs I use are probably Handbrake (maybe three times a year) and Sketchup (about 10 hours every week).
If Microsoft can run x86 apps on ARM, surely Apple can too. They had Rosetta to run PPC apps on Intel so it's not uncharted territory for them either.