Professional sports essentially boils down to the premise that "the collection of professional athletes under contract for my home town will beat the collection of professional athletes under contract for your home town..."
Tom Brady caused many Bostonians for years to puff their chests out with pride that they, yes THEY, are Super Bowl champions! Now Tom Brady has moved to Florida and it is Floridians now puffing out their chests because THEY are Super Bowl champions!
When you think about it, it's all a bunch of juvenile nonsense.
Professional sports essentially boils down to the premise that "the collection of professional athletes under contract for my home town will beat the collection of professional athletes under contract for your home town..." As Jerry Seinfeld pointed out, it's rooting for the clothes, not the players in them since the players move from team to team.