In the long term, I would say don't worry too much about it OP. After the first 30 days is up, most of the trolls and d-bags will have gone. There will certainly be some remaining, and there will always be elitists as well, but it shouldn't be as noticeable.

And to the poster who said this was all to blame on DF... you have no idea what you're talking about. Being able to more quickly and easily form a group without having to make them manually doesn't have any effect on their behavior. If anything, it would make them less irritated. I run probably 8-10 instances a day and in a week I've only had 1 truly toxic player, 1 troll leaver. Of course, I set the DF to J/E and am on Masamune, so that might help the issue. NA is certainly plagued with more rude people... but that still has nothing to do with DF. Rude people don't suddenly become polite when they have to find groups manually.