I'm gonna say something unpopular: I don't like to rush.

[Vahlnir]

But to answer that other question, if you can show someone how to improve (as opposed to simply telling them to improve) without being needlessly confrontational and/or insulting, then I don't consider that being toxic. For example, I've seen people simply say, "Please AOE." That's not toxic. I hope that clarifies it.

One time I said in Cutters Cry "melee LB" on the 2nd boss as a fellow dps who had only the ranged one available.. They used it, but then proceeded to tear into me because I was a mentor at the time. After that I was simply done with the whole Mentor thing and never looked back. I'd imagine the reaction might have been less severe had I not had my crown on though, but it goes to show that some people will take offense to anything. Never underestimate people. I don't encounter this sort of thing often and I don't think it's all that common, but it is truly something else when it does occur. Before that instance and after I have never seen someone react so negatively to LB calling, so it is most certainly an outlier of sorts. 99.99999% of the time the call goes out, the LB is performed (or not sometimes) and that's that.