I see what you mean.
It's probably easier for them to "blow" a game with a terrible decision than to "win" a game with a brilliant one.
It's mostly on the players anyway of course
Which means essentially the same thing.........
They can have a modest impact on your W-L record.
If you're crusing to 1st or last place well....
But in a tight division race or the post seaon, every win matters