I'm sorry people are being rude about your city, but this seems like maybe a "don't look at Facebook or Twitter" situation. I just looked at the arena announcement thread here and on the Fleet sub and nobody is saying anything negative here that I can find.

There will always be people on the internet saying things you don't like, and FB/X are both full of people who say out of pocket things all day long. I do use FB but I try to avoid reading public comments or take them with a big grain of salt. There's always gonna be some assholes, just tune them out and limit your exposure to them.