It's the usual thing of someone new or less experienced/confident in the role not really understanding why the old vets are fed up with things because they haven't experienced it yet.

Again, it's seemingly hard to convey how the role is actually pretty fun when everyone is new, under geared and generally bad.

It falls to bits at in end game casual content once people get some gear and have half a clue what they are doing. The experience gets objectively worse as everyone gets better.