Moving the goalpost and strawmanning in one reply. Should I only post in single words so that you can't crop out the info you dislike?
Which part of "asking for advice" and "improve" did you not understand?

If you >new guy< overestimates himself and decides to be witty about it, can you blame people to leave? Given that the dungeon structure makes it more than difficult to wipe on big pulls since packs are gated behind others anyway.

For the sake of clarity: Can you give me a concrete example of your party bailing after mentioned mass pull?