It’s just because it’s the easiest way to comment on HOW the game was played without getting into a total play-by-play thing.
The whole point of baseball is to score runs - and a lot of news outlets do show only this - but it’s decidedly important to get hits to score these runs, and to not commit errors to not allow more runs.
Whereas in other sports, any things that one could keep for statistical purposes either does not have as much of a due on scores, or there are SO many variables to winning and losing that it’s pointless to pull out one thing which tells the secondary story as well as hits and errors in baseball.
For example, in football, total yards helps, but this does not include turnovers, also of importance. But other games have been decided by special teams, which does not show up in offensive/defensive stats.
In hockey, what else is there to say? How many icing calls rthere were? Same thing in basketball.
Also, and I just thought of this, baseball in the mainstream media predates all other pro sports. Anytime you read an old newspaper, you see quaint things which you just don’t see anymore. Maybe the terminology and bringing to attention of these periphery stats was a habit of the old reporting way that just didn’t (completely) die away.