Do people still use ethernet in 2016??
Professionals still use ethernet. A single 1Gb link can send 512 channels in each direction (uncompressed, 48kHz, 24-bit audio).
https://www.audinate.com/solutions/dante-overview
https://www.audinate.com/content/star-trek-premiere
http://www.waves.com/soundgrid-systems
https://www.namm.org/thenammshow/2017
http://www.studer.ch/en-US/product_families/studer-mixing-consoles
https://us.focusrite.com/ethernet-audio-interfaces/rednet
And there's more. So, if you look through these links, you can see why pros have concerns for Apple.