There was a previous issue regarding "railroaded" events, e.g. that Republic tribal dignitaries escort thing.
There were concerns raised about how that could have affected the storyline and so on.
Others raised concerns about the players inability to affect the storyline, because of the use of invulnerable (effectively- due to QA modules) npc ships.
There were other concerns about the nature of live events as "loot pinatas".
And people raised concerns about "Dev favouritism" or "Dev corruption". Claiming that the Devs "wanted people to fail" or whatever.
Has anything changed ?
If the NPC structures were in fact invulnerable, and could only be destroyed through GM action then... all the planning of any fleets, any skill shown by any pilots involved, all of that does not matter.
The event boils down to "A GM pressed a button and we lost", or "A GM pressed a button and we won".
If one side attacked with rookieships, if they met the criteria for the button being pressed, then they won. Regardless of the actions of the defenders.
If the defenders defended with rookieships and shuttles, if the criteria for pushing the button was not met, then they won, regardless of the actions of the attackers.
And because the event pivots on whether or not a single GM pressed a button, then the whole issue about transparency and integrity of CCP staff comes right back. It is not right to put a single person into that situation, where thousands of disgruntled players can complain about it.
It only leads to alienation of the players and devs. In defence of their employee, CCP will ignore or deflect criticism, and again, nothing changes.