How do 13nm processors hurt Android?
Because they will put full windows machines in phone sized packages. Add a Bluetooth keyboard, bluetooth mouse, plug in a mini HDMI cable to a monitor and you can have your full windows machine with all your software installed wherever you happen to be at the time.
This will pull the power users (who seek the most capable and flexible platform) away from android. Possibly for good.
Power users are a relatively niche market sector, yet they affect the purchases of a wider group of people who rely on them for advice and tech support.
Over time Android will take a hit. Apple was never much of a competitor for this market sector because of the relentless effort they put in to keeping their walled garden enclosed. Windows Phone was too much increased cost and too much more work for the small amount of increased functionality it held over Android.
This will be a different trade off. And Android has already set itself up to lose by decreasing SD card functionality.