It's not about the city. It's about the franchise. The bobcats/hornets is an entirely different franchise. It doesn't makes sense to give away history of this franchise just because fans want it.
I thought it was a mistake by the nba letting Charlotte rebrand back to the hornets anyway. Just creates confusion. If Seattle ever gets a team, you think they take that history back? Like the 1 year they had Durant? No probably not.