Do you think Rappers should remember where they come from?

There are some rappers that forget where they come from and talk bad about where they come from? Do you think this is right? For example, Let's take a look at Fat Joe. He puts the Bronx down. He says that is dirty etc.. Do you think this is justifiable? From my personal opinion, I believe that no rapper should talk bad about from where they come from, because due to that environment they are what they are now. Also, they should rep more where they are from. Below are some rappers that rep hard where they are from, Big ups to them.

Maino
Lil Wayne(even though he doesn't raps real hip hop)
Cory Gunz
Paul Wall
LLoyd banks