And explain it I will.
As for New York Railfans, MSG was built directly above Penn Station after the body horror it went through between 1963 and 1968, so when the big day comes, people who use the LIRR, NJ Transit, or Amtrak to travel into Manhattan will have their trip ruined by extreme crowding.
And as for Swifties, let's face it. Taylor and Travis's wedding means their microscopic chances of ever meeting the woman will have been obliterated. In fact, they already have been by the Eras Tour of 2023 to 2024, but the wedding will officially solidify this.
I hope my explanation is reasonable, and you're welcome.