First of all, sorry to hear this. Judging by the forums(not just from this server,) there seems to be quite a lot of frustration between players that commonly play in groups and those that don't. Solo players disliking the dominance of groups, and groups feeling the need to always group to avoid the unreliable solo players. If more of the stronger imperial pvpers were split into smaller guilds, I think we'd be having close to the same problem. The guild tags would have more variety, but the problem would still persist as long as players had fun teaming up.
Players that reach out to other players and are decent, can make friends and find groups. A guild isn't a requirement to find other players for those who don't want to join one. I highly encourage everyone to do that, not because I am forcing my own thoughts on anyone, but it can really make a difference in your own enjoyment. Sometimes I queue up solo, and all is well. Other times I queue solo and before the next match I will scramble to bring some other players with me so I don't get stomped, it just is the nature of the beast right now, and friends in warzones make a big difference.
Everyone looks for something to blame. I sometimes resent the amount of it laid on Grim, but then again, that is also the beast's nature.