I read that article too and mentioned it in my first sentence. That's the article that Stratechery pulled their figures from. The validity of that article and those benchmarks is what I'm doubting.

Will the new Macbooks with M1 chips compare favorably against Intel laptops with low power and fanless designs? Yeah.

Is the existing A14 chip faster than than a 10900k (even in single threaded performance)? No way. There is something in the benchmark that is messed up to the point where you can't compare them.