Based on the little bit I got from Tripadvisor, they believe the admins were blocked as retaliation for them Playstudios from their group. However, before I quit the group and unfriended Brad, I had seen a lot of negative threads started and the admins were instigating the negativity. I think they know exactly why they were blocked from the game and I was irritated that one of them went on TA to try and drum up sympathy.
The reason some may be throwing out the greedy word as it relates to this meet and greet was because of all the redemptions Brad was making. I know he redeemed at least 10 rewards for Border Grill in one day, commenting that they were for the meet and greet and within days all kinds of rules started changing. He also made other multiple redemptions for several other rewards for other event sites. At the end of the day, there were several people who were funding their entire vacations with game rewards. As Monty Kerr stated when the rules changed, that was never the intent of the game.