Some players may think of it as incessant whining.
However, they're never going to improve at all if you don't give them pointers.
For all we know, they could think that their events are amazing. I mean, they did bring them out to us, and you find most moderators defending the events with their own 'flawed logic'.
You don't have to get overtly triggered over the lackluster nature of the events, but simply give them the cold, hard truth.