Just a clarifying point - team reporters aren't real reporters. They're mouthpieces for the teams. Some of them - not all, but certainly some - try and project themselves as real reporters (usually the ones who previously were real reporters who got laid off and then turned to the "dark side"). But, they aren't. They're basically PR people who write stories.
So, if I'm the Bills, and I'm paying a salary to someone to write favorable coverage for my own team's website, social channels, etc., yeah, I'd probably be irritated by this "reporter's" oopsie.
Note - one could also argue that the vast majority of reporters who cover sports aren't "real" reporters and that's a fair viewpoint. It's certainly the viewpoint of many reporters who cover non-sports...