Why is that? It just doesn't seem rational to me to see it that way, but if that is how you feel then that is how you feel. I'm not going to try to convince you otherwise, I already know I can't, but just some explanation would be valuable.
And there is ways to display it. A pub calling itself "Penny Lane" and displaying a liver bird is totally fine, but when an english pub looks excessively, in-your-face english, i just can't, and i would bet most englishmen living in the same city couldn't either. It's just so weird.
It actually makes no sense at all for sports beyond billionaire owners trying to make fans feel like we’re all one, big, happy family. What on earth does the National anthem have to do with grown men playing baseball or football? Do they sing the National anthem before you sit down and start coding every day?