This is the end.

[Jerichai]

Snip

Here's the problem with your attempt to turn that around on me. I'm asking people to exercise basic decency and respect to make use of the feature. You're asking that people should be willing to potentially put up with bullying and harassment, no matter how good the advice attached to it is. Kind of hard not to see which is the more reasonable option. Not to mention, there's a wide array of reasons why someone may not be performing adequately (to you standards), and most are not from a willful desire to drag the party down. A lot of it can come down to people not knowing what they don't know. Like the situation I can gather from the OP's statement, they may think what they're doing is beneficial to the group even if it ultimately isn't. That's not an attitude rooted in a selfish desire to screw over people.

The only expectations you can have for a completely random roulette party are the entry requirements for the instance, the rules set by SE (such as no botting), and the roles each player is assigned upon entry (tank, healer, or dps). So yes, it is reasonable to kick a healer who refuses to cast any heals, or a tank who doesn't pick up NPCs, or a damage dealer who's literally doing nothing or almost nothing to help the team. But un-optimized DPS does not mean that player is not fulfilling the role as a damage dealer. And in this situation we're not talking about someone who steadfast refused to participate. We're talking about a bard who's DPS dropped because they used ballad at an inopportune time. Sorry if I don't see that as a crisis that merits the response it got.

At the end of the day, if you see someone doing something you know is wrong, stop assuming they're always doing it out of laziness or a desire the ruin your day. They may just not understand what the right approach is. Just because something is obvious to you doesn't mean it will be to them...and it's very likely there are some concepts that come easy to them that may confuse you. That's the reality of having more information/knowledge in the world than any one person can hope to even come close to understanding. Instead of flying off the handle, take a moment to respectfully point out the flaw and how they might improve. I might also suggest handling it through a whisper, because a lot of people can feel like they're being called out/blamed when these comments come up in party chat. I will concede that you will find some people who do not care about improving. But in over a decade of playing MMOs, I've found that the vast majority are more than happy to take your advice when it's given in a helpful, respectful manner.