What’s going on with Taylor Swift getting booed during the Super Bowl?

I see there is an uproar of some sort swirling around Taylor Swift getting booed on that occasion. And even the current president mocked her for this. I am curious why was she so not liked in this field?

I read the article below yet still scratched my head after. She got a bit screen time but so that’s enough to get a boo of such magnitude? It’s not due to something else?