I'm seeing some people try to downplay the issues, even some who were there.
Let's boil it down to the key facts
1. They packed 22,000 people into a 0.49 square mile area without considering cellular congestion
2. People waited in unsupervised lines to get in for at least 4 hours despite it being a finite ticketed event
3. Niantic's communication about the issues were not the best, blaming it on the servers when the servers were fine. It took them 5 hours before they even mentioned that connecting to WiFi will alleviate the issues
4. There were lines to leave
5. The line to get back in was also several hours
6. The 9 hour stream was about 95% a splash page, 4% clips from certain youtubers (all of whom that Niantic invited haven't spoken negatively about the event) and 1% apologies.
7. Junichi Masuda, lead producer and series director of the Pokémon games attended this event and left early due to it.
This event has been a massive missfire and complete disaster