Wi-Fi only board?

Looking around the Chinese source of these SBC, hardly anyone has a board
that is small, low cost and reasonably powerful like the NanoPi2. But
FriendlyARM has to take it away, replace the WLAN with a Ethernet adapter
and call it NanoPi2 Fire!

I don't really get it, why the Chinese has to add an LAN connector where it
is obviously in many use cases nowadays that cable LAN is not preferable?

What is the rationale behind these decisions, including like an 8-core CPU
with only 2GB RAM and USB 2.0, WTF?

    Now we have support NanoPi M3 which has WiFi and Ethernet