As someone who has cleared turn 13 before echo and is all about min maxing, i disagree with
people who use the word "Toxic" are usually synonymous with elitist bashing, unwilling to learn, "Bad players"
I don't classify the current end-game population to be overall toxic, but it's definitely getting bigger in that regard. 2 days after the expansion EA release there were people complaining about people not skipping cutscenes, not using certain abilities etc...5 days after there were parties saying crap like "know fight or kick" "die once get kicked". It's actually getting really bad for a lot of players.

I asked a couple of groups if i could join for BEX i knew the fight in it's entirety, i was greeted with "no" then i was ignored. Now as a said above, as someone who has cleared all the coil, if somebody ever said they knew the fight, i gave them a chance to prove it as i hosted farm parties and loot allocation groups. Now it seems like people are getting a lot more selfish, it's all about me me me me me, nobody wants to help anyone else out. Sure you can get yourself a static, but that is easier said than done. Especially since you want a group with your skill level, and people that you've known for awhile or people that you can get along with.

Now whether people want to classify the "no" don't bother me attitude as toxic, i guess that's fair. But i like to consider the hunts attitude as toxic, I.E abusive, condescending etc..