In order for every single game to not be dominated by a Tracer, there needs to be hard counter to her. Before Brigitte, she used to have none. Pharah DID NOT counter her, her rockets were and are, far too slow to consistently hit a Tracer.
McCree also did not counter her, since good Tracers have no problem one clipping McCrees because of his giant hitbox. Sure, McCree could land a flashbang and then a headshot, but keep in mind flashbang is on a 12 second cooldown. As long as it is on cooldown, he has no chance of fighting a tracer.
Lucio does decently against her, but I’d say it’s an even match up, he doesn’t counter her but he can challenge her pretty well. Finally Roadhog. Well, Roadhog is free ult charge for a good Tracer, and again, it’s very hard to hit a hook just with like a flashbang.
This essentially only leaves Brigitte as a counter, and yeah, she does do well against her with ease. And why is that a problem to some people?
My point is that it is very hard to counter a Tracer, but every other hero in the game has a hard counter that can easily shut them down. So why should Tracer be the only one who needs to take so much effort to shut down?
I’m not saying Brigitte shouldn’t be toned down or anything like that, but her ability to one shot Tracer is a necessary evil.
I’m talking from an objective standpoint. I don’t encounter good tracers often. I don’t care, but I’m referring to high level play where she completely dominated games. Mostly in OWL.