This is a bit unfair. The guild system is extremely unfair to newer or more casual players. Similarly if you do not have RL friends who also play the population is so fluid that if you are casual or newer it is difficult to make friends who will matc with your time/standard.
Watching the lfm panels it very much looks like there is so sort of problem going on with grouping. It's affected both by the BB and also by people choosing to play only within guild or channels.
As people leave as they find the content too easy or are attracted by other games are we replenishing our population?