Personally, I'm sick and tired of it. If people in XI were going to non-XI servers and constantly whining about getting shot, how would that represent our clan? It's bad enough that non-XI members hear it all the time on our own servers.
And honestly, the worst offenders are typically the better players. Which makes it even more annoying. If you have a positive K/D ratio and are taking the time to type in "bs", "wow", "amazing" and all that crap and you aren't joking around every time you get killed, you need to decide if playing the game is even the right priority for you. Perhaps yoga or meditation would be a more effective use of your time.
The game is supposed to be fun - we're supposed to be, at the very least, friendly with each other. There aren't too many assholes on the servers with an XI tag (Flush is the only I can name off the top of my head), and MOST of the time people are pretty good sports and the occasional "fuck you google" is just a different way of saying "Nice shot you fucker." But some people just can't ever seem to lighten up. It's sad really.