Yes they actually lose WG on purpose. These are just the chat pics from last WG on alliance side:
https://imgur.com/a/gh3jp8x
I'll draw it for you Harrpaniz1: so WG starts, someone from alliance tells people that they'll make a group instead, so a bunch of people leave from the initial premade WG group, so they can join the new one and lose, on purpose, so they can farm hks after at the VOA entrance -when horde pve players come for VOA raid, 1 at a time. Sadly for that NEW premade group, alliance actually won this time (them main group), so rip free hks.
(Yes have full pics as well non cropped)