I was raised in Miami and my family lives there still as well! We should meet up some time and complain about Miami together, haha. I agree with all the points you made.
Miami has quite a shallow population. I've also found as time goes on that as I develop new interests, there is poor community around most of them--the little things like rock climbing or playing ping pong. It's even extremely difficult to find a coffee shop to work out of when I visit family.