Specifically for SOA, this is not a “space holder” - this is an AI guild so you have someone to face in your bracket for Guild Wars.
There is no other Guild that you can be matched with, in your ELO bracket, you are above the threshold, or range, from the next actual Guild.
Your Guild would have to drop in rank, to play against a real Guild.
This is also why they aren’t taking up a space on the actual GW leaderboard, where the rewards and bonuses are determined.
All Guild are matched against other Guilds in their ELO bracket, if there aren’t enough real Guilds in your bracket, that is when you would fight against an AI Guild or an actual Guild again..
TLDR; this is not a bug.