No…
You are complaining about people complaining, but them complaining is how you get change. This is true in anything. Voice your issues so that others may hear them and share them, when your voice spreads far enough and gets loud enough through the influence of others, then improvements will be made.
Pretending everything is all sunshine and flowers will just result in you getting worse and worse garbage as time goes on, until even you complain about it.
The guy you’re quoting was bringing up big issues, not being able to see your quest completely ruins the experience and slows people down far too much. CMs that should be won are being lost due to lag, resulting in no cubes. And any sort of interruption in casting skills should be dealt with ASAP, whether it be lag, shitty casting (Like Chortasmata), or even just absurd cast times in a game full of staggers (Examples are more like stone shot, blocks, barrel, not stuff like Meteor)
Regardless of what is affecting your casting, it should be fixed as soon as possible.
But mostly the quests, ■■■■ the quest UI bug.