It's been going on for a very long time, and from what I see from people's reaction it's only getting worst.
Just last week, during a pug heroic ToS, in order to survive we had to kick them all and they got mad.
What are we supposed to do with Ragnaros, Azralon, Quel'Thalas and Goldrinn players?
Because very obviously we can't play with them, they are not good enough. We can't communicate, only about 10% of them can speak understandable English (which is also not my first language, so no need for that "you selfish ignorant Americans bla bla bla" (I'm not even American)).
More and more I see people refusing to join groups lead by these players, or refuse to invite them in their groups.
In short here's what happened in that pug I mentioned:
The leader is from Goldrinn, he invites a bunch of people, we go to Mistress. We stand in front of her and nothing happens, there is no raid leading happening whatsoever, all he does is say something like "tanks go". So we do a pull timer and go for it, see how it goes.
Obviously we get trashed.
So the other tank says that we should get on voice, it would make everything much easier and that some raid leading would help people less familiar with the fight. Again, no response from the leader. So that nice lady tank offers people to join her Discord server, she gives the link, some people get in.
"Yeah it's gonna be much easier now."
"We can call stuff and explain the fight."
"Right, but we need people to get on discord with us, we need the whole raid in here."
So in raid chat we insist that people get in to make it easier. We ask the leader if he wants to raid lead or just give it to someone who will. So he gives lead to someone who was in Discord with us, some more people get in discord as well, some are missing.
So the new leader says "Alright, if you're in discord click no on that readycheck" (the classic move).
We were like 25 in the raid, 18 in discord, but only about 15 clicked no. He proceeded to kick everyone who clicked yes. All of them from the servers mentioned above.
Some guy seeing a bunch of people from his server getting kicked one after the other gets mad and says something like "why you kick all these people? they are on discord". So the leader tells him about the readycheck thing and the guy replies "well they don't understand english" to which the leader replies "what good are they if they can't even listen to raid calls in discord?".
The guy gets even more pissed and accuses him of racism and kicking people just because they don't speak english, and he leaves. (he was the only person from these servers to understand english, he was not gonna get kicked but all his language-challenged friends got kicked already).
We then proceeded to raid like normal.
Needless to say this anti BR attitude everybody has comes from a neverending streak of bad experiences of playing with people from these servers. It's not based on anything besides the fact that they are much lesser talented players than every other server, that's just a fact (okay maybe they have one or two prodigal players here and there) but it's nothing cultural or truly racist.
We can't really tell them what to do, can't give any tips, can't really help them, they don't understand english. I mean even if we wanted to help them get better, there's nothing we can do.
Why are their servers connected to english speaking servers?
There's nothing we can do with them, what does blizzard want from us?
In the end they think we're racist assholes simply because we refuse to wipe endlessly. That's not cool for anyone and all this would be avoided if they had their own battlegroup.