This may pose a little trouble for those who may want to use the eARC connection for Dolby Atmos or HDMI CEC purposes, but one can always invest in an HDMI switcher if push comes to shove.
At boot, ArkOS will check for a wifikeyfile.txt file in the roms/tools folder (or roms2/tools folder for 2 sd card setups) and start a wifi credentials importing process. With great power comes great ...