Other than the name change, I don’t see how this is different than the Dodgers or the Giants. And if you look at it objectively it really isn’t. I understand that some DC Fans are mad at MLB, but it seems they should be mad at Angelos and whatever owners moved to Minnesota and Texas.
I haven’t met a Giants fan yet, that disavows the Bobby Thompson Home Run.
My uncle grew up a giants fan- he despises them and roots for the Yankees now. If you follow a team based on geography, following them to a new city or caring about what they did in another city doesn’t really make much sense